[30.0.0] Add release notes (#10212)

* Add release notes

Busy release!

* Update cargo-nextest used on CI (#10211)

This commit updates the version of `cargo nextest` used on CI from
0.9.67 to 0.9.88. It turns out that the nightly used in testing,
`nightly-2025-01-09`, cannot actually compile 0.9.67 due to a bug in the
`ahash` crate dependency. This never showed up prior on CI because we
cache the build of `cargo nextest` so the update of rustc to a new
nightly did not force a rebuild to happen. Now that the cache has been
removed the error is now showing up, so this will hopefully unblock the
queue.

.github/workflows/main.yml

@@ -1070,7 +1070,7 @@ jobs:
     name: Miri
     runs-on: ubuntu-latest
     env:
-      CARGO_NEXTEST_VERSION: 0.9.67
+      CARGO_NEXTEST_VERSION: 0.9.88
       MIRIFLAGS: -Zmiri-permissive-provenance
     steps:
     - uses: actions/checkout@v4

RELEASES.md

@@ -9,19 +9,153 @@ Unreleased.
   depend on this new crate.
   [#10036](https://github.com/bytecodealliance/wasmtime/pull/10036)
 
+* Wasmtime's interpreter, Pulley, is now complete and has been listed as
+  [tier 2].
+  [#9897](https://github.com/bytecodealliance/wasmtime/pull/9897)
+  [#9884](https://github.com/bytecodealliance/wasmtime/pull/9884)
+  [#9943](https://github.com/bytecodealliance/wasmtime/pull/9943)
+  [#9944](https://github.com/bytecodealliance/wasmtime/pull/9944)
+  [#9983](https://github.com/bytecodealliance/wasmtime/pull/9983)
+  [#9966](https://github.com/bytecodealliance/wasmtime/pull/9966)
+  [#9935](https://github.com/bytecodealliance/wasmtime/pull/9935)
+  [#10034](https://github.com/bytecodealliance/wasmtime/pull/10034)
+  [#10057](https://github.com/bytecodealliance/wasmtime/pull/10057)
+  [#10095](https://github.com/bytecodealliance/wasmtime/pull/10095)
+
+* Wasmtime's CI now checks that the repository builds for `aarch64-apple-ios`.
+  Note that no tests are run for this target, so it's still [tier 3].
+  [#9888](https://github.com/bytecodealliance/wasmtime/pull/9888)
+
+* Winch's support for AArch64 and simd on x64 have continued to progress
+  well. Winch additionally now fully supports the `threads` WebAssembly
+  proposal.
+  [#9889](https://github.com/bytecodealliance/wasmtime/pull/9889)
+  [#9970](https://github.com/bytecodealliance/wasmtime/pull/9970)
+  [#9950](https://github.com/bytecodealliance/wasmtime/pull/9950)
+  [#9987](https://github.com/bytecodealliance/wasmtime/pull/9987)
+  [#9990](https://github.com/bytecodealliance/wasmtime/pull/9990)
+  [#9959](https://github.com/bytecodealliance/wasmtime/pull/9959)
+  [#10008](https://github.com/bytecodealliance/wasmtime/pull/10008)
+  [#10028](https://github.com/bytecodealliance/wasmtime/pull/10028)
+  [#10029](https://github.com/bytecodealliance/wasmtime/pull/10029)
+  [#10023](https://github.com/bytecodealliance/wasmtime/pull/10023)
+  [#10042](https://github.com/bytecodealliance/wasmtime/pull/10042)
+  [#10050](https://github.com/bytecodealliance/wasmtime/pull/10050)
+  [#10039](https://github.com/bytecodealliance/wasmtime/pull/10039)
+  [#10082](https://github.com/bytecodealliance/wasmtime/pull/10082)
+  [#10092](https://github.com/bytecodealliance/wasmtime/pull/10092)
+  [#10109](https://github.com/bytecodealliance/wasmtime/pull/10109)
+  [#10148](https://github.com/bytecodealliance/wasmtime/pull/10148)
+  [#10147](https://github.com/bytecodealliance/wasmtime/pull/10147)
+
+* The `memory64` WebAssembly feature is now enabled by default. This WebAssembly
+  proposal is now considered a [tier 1] feature.
+  [#9937](https://github.com/bytecodealliance/wasmtime/pull/9937)
+  [#10159](https://github.com/bytecodealliance/wasmtime/pull/10159)
+
+* Wasmtime's full test suite and CI now includes 32-bit platforms such as x86
+  and armv7 Linux. These platforms have been added to [tier 3] status and use
+  Pulley as their execution backend.
+  [#10025](https://github.com/bytecodealliance/wasmtime/pull/10025)
+
+* Initial experimental support for WASIp3 and async features of the Component
+  Model have started to land. These features are not yet ready for
+  general-purpose use.
+  [#10044](https://github.com/bytecodealliance/wasmtime/pull/10044)
+  [#10047](https://github.com/bytecodealliance/wasmtime/pull/10047)
+  [#10083](https://github.com/bytecodealliance/wasmtime/pull/10083)
+  [#10103](https://github.com/bytecodealliance/wasmtime/pull/10103)
+
+* The `wasmtime` CLI now supports using a TOML configuration file via `--config`
+  in addition to CLI options.
+  [#9811](https://github.com/bytecodealliance/wasmtime/pull/9811)
+  [#10132](https://github.com/bytecodealliance/wasmtime/pull/10132)
+
+* Initial support for a new assembler on x64 has been added.
+  [#10110](https://github.com/bytecodealliance/wasmtime/pull/10110)
+  [#10178](https://github.com/bytecodealliance/wasmtime/pull/10178)
+
 ### Changed
 
 * `wasmtime-wasi` split the `WasiView` trait into `IoView` and `WasiView`, and
   `wasmtime-wasi-http` re-uses `IoView` in `WasiHttpView`. Details on porting
   for embedders in PR.
   [#10016](https://github.com/bytecodealliance/wasmtime/pull/10016)
 
-* `wasmtime-wasi` renamed some exported types and traits. Embedders which use 
+* `wasmtime-wasi` renamed some exported types and traits. Embedders which use
   `Pollable`, `InputStream`, `OutputStream`, `Subscribe`, `HostInputStream`,
   `HostOutputStream`, `PollableFuture`, or `ClosureFuture` from that crate
   will need to rename those imports to their new names, describe in PR.
   [#10036](https://github.com/bytecodealliance/wasmtime/pull/10036)
 
+* Components using a 64-bit linear memory should never have worked before, but
+  they're now rejected earlier in the validation process.
+  [#9952](https://github.com/bytecodealliance/wasmtime/pull/9952)
+
+* Module validation is now deterministic in the face of multiple errors.
+  [#9947](https://github.com/bytecodealliance/wasmtime/pull/9947)
+
+* Wasmtime's minimum supported version of Rust is now 1.82.0.
+  [#9956](https://github.com/bytecodealliance/wasmtime/pull/9956)
+
+* Cranelift will now deduplicate `trap[n]z` instructions.
+  [#10004](https://github.com/bytecodealliance/wasmtime/pull/10004)
+
+* The `--emit-clif` option to `wasmtime compile` now emits post-optimization
+  CLIF.
+  [#10011](https://github.com/bytecodealliance/wasmtime/pull/10011)
+
+* The `signals-based-traps` Cargo feature has been removed in favor of
+  auto-detection of available features based on the `#[cfg]` directives
+  available for the target platform.
+  [#9941](https://github.com/bytecodealliance/wasmtime/pull/9941)
+
+* The `async_stack_zeroing` configuration knob now covers all stack allocations,
+  not just those from the pooling allocator.
+  [#10027](https://github.com/bytecodealliance/wasmtime/pull/10027)
+
+* Wasmtime should work-by-default on more platforms, even those where Cranelift
+  has no support for the architecture. This is done by ensuring some
+  architecture and platform-specific bits are removed on unknown platforms (and
+  Pulley is used instead).
+  [#10107](https://github.com/bytecodealliance/wasmtime/pull/10107)
+
+* Wasmtime now compiles on platforms missing 64-bit atomics.
+  [#10134](https://github.com/bytecodealliance/wasmtime/pull/10134)
+
+[tier 1]: https://docs.wasmtime.dev/stability-tiers.html#tier-1
+[tier 2]: https://docs.wasmtime.dev/stability-tiers.html#tier-2
+[tier 3]: https://docs.wasmtime.dev/stability-tiers.html#tier-3
+
+### Fixed
+
+* Fixed a missing case for `Ref::matches_ty` should return `true`.
+  [#9985](https://github.com/bytecodealliance/wasmtime/pull/9985)
+
+* A bug with using the `single_pass` register allocation algorithm on x64/s390x
+  has been fixed by refactoring how branches are represented.
+  [#10086](https://github.com/bytecodealliance/wasmtime/pull/10086)
+  [#10087](https://github.com/bytecodealliance/wasmtime/pull/10087)
+
+* A bug with argument extensions on riscv64 has been fixed.
+  [#10069](https://github.com/bytecodealliance/wasmtime/pull/10069)
+
+* The `PartialEq` implementation for `RegisteredType` has been fixed.
+  [#10091](https://github.com/bytecodealliance/wasmtime/pull/10091)
+
+* The output of `component::bindgen!` now works with `#![no_std]` crates.
+  [#10105](https://github.com/bytecodealliance/wasmtime/pull/10105)
+
+* Fix `wasmtime wast` when combined with `--fuel`.
+  [#10121](https://github.com/bytecodealliance/wasmtime/pull/10121)
+
+* The `wat` feature of the C API is now plumbed correctly in a few more
+  locations.
+  [#10124](https://github.com/bytecodealliance/wasmtime/pull/10124)
+
+* Spurious wake-ups in `blocking_*` methods of `InputStream` and `OutputStream`
+  have been fixed.
+  [#10113](https://github.com/bytecodealliance/wasmtime/pull/10113)
 
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