Add release notes for 7.0.0 (#5963)

RELEASES.md

@@ -16,8 +16,56 @@ Unreleased.
 
 ### Added
 
+* An initial implementation of the wasi-threads proposal has been implemented
+  and landed in the Wasmtime CLI. This is available behind a
+  `--wasi-modules experimental-wasi-threads` flag.
+  [#5484](https://github.com/bytecodealliance/wasmtime/pull/5484)
+
+* Support for WASI sockets has been added to the C API.
+  [#5624](https://github.com/bytecodealliance/wasmtime/pull/5624)
+
+* Support for limiting `Store`-based resource usage, such as memory, tables,
+  etc, has been added to the C API.
+  [#5761](https://github.com/bytecodealliance/wasmtime/pull/5761)
+
+* A top level alias of `anyhow::Result` as `wasmtime::Result` has been added to
+  avoid the need to explicitly depend on `anyhow`.
+  [#5853](https://github.com/bytecodealliance/wasmtime/pull/5853)
+
+* Initial support for the WebAssembly core dump format has been added to the CLI
+  with a `--coredump-on-trap` flag.
+  [#5868](https://github.com/bytecodealliance/wasmtime/pull/5868)
+
 ### Changed
 
+* The `S` type parameter on component-related methods has been removed.
+  [#5722](https://github.com/bytecodealliance/wasmtime/pull/5722)
+
+* Selection of a `world` to bindgen has been updated to select any `default
+  world` in a WIT package if there is only one.
+  [#5779](https://github.com/bytecodealliance/wasmtime/pull/5779)
+
+* WASI preopened file descriptors can now be closed.
+  [#5828](https://github.com/bytecodealliance/wasmtime/pull/5828)
+
+* The host traits generated by the `bindgen!` macro are now always named `Host`,
+  but are still scoped to each individual module.
+  [#5890](https://github.com/bytecodealliance/wasmtime/pull/5890)
+
+### Fixed
+
+* Components which have `type` imports are now supported better and error/panic
+  in fewer cases.
+  [#5777](https://github.com/bytecodealliance/wasmtime/pull/5777)
+
+* Types referred to by `wasmtime::component::Val` are now reexported under
+  `wasmtime::component`.
+  [#5790](https://github.com/bytecodealliance/wasmtime/pull/5790)
+
+* A panic due to a race between `memory.atomic.{wait32,wait64,notify}`
+  instructions has been fixed.
+  [#5871](https://github.com/bytecodealliance/wasmtime/pull/5871)
+
 --------------------------------------------------------------------------------
 
 ## 6.0.1