Update changeset

.changeset/remove-fetcher-back-compat.md

@@ -2,4 +2,7 @@
 "@remix-run/react": major
 ---
 
-Remove back-compat layer for useFetcher/useFetchers
+Remove back-compat layer for `useFetcher`/`useFetchers`.  This includes a few small breaking changes:
+* `fetcher.type` has been removed since it can be derived from other available information
+* "Submission" fields have been flattened from `fetcher.submission` down onto the root `fetcher` object, and prefixed with `form` in some cases (`fetcher.submission.action` => `fetcher.formAction`)
+* `<fetcher.Form method="get">` is now more accurately categorized as `state:"loading"` instead of `state:"submitting"` to better align with the underlying GET request