docs: add entry for vim.maps rewrite

docs/release-notes/rl-0.7.md

@@ -4,6 +4,8 @@ Release notes for release 0.7
 
 ## Breaking Changes and Migration Guide {#sec-breaking-changes-and-migration-guide-0-7}
 
+### `vim.configRC` removed
+
 In v0.7 we are removing `vim.configRC` in favor of making `vim.luaConfigRC` the
 top-level DAG, and thereby making the entire configuration Lua based. This
 change introduces a few breaking changes:
@@ -24,6 +26,28 @@ making good use of its extensive Lua API. Additionally, Vimscript is slow and
 brings unnecessary performance overhead while working with different
 configuration formats.
 
+### `vim.maps` rewrite
+
+Instead of specifying map modes using submodules (eg.: `vim.maps.normal`), a new
+`mode` option has mode has been introduced. It can be either a string, or a list
+of strings, where a string represents the short-name of the map mode(s), that
+the mapping should be set for. See `:help map-modes` for more information.
+
+For example:
+
+```nix
+vim.maps.normal."<leader>m" = { ... };
+```
+
+has to be replaced by
+
+```nix
+vim.maps."<leader>m" = {
+  mode = "n";
+  ...
+};
+```
+
 ## Changelog {#sec-release-0.7-changelog}
 
 [ItsSorae](https://github.com/ItsSorae):
@@ -111,6 +135,8 @@ configuration formats.
     has been introduced for setting up internal plugins. See the "DAG entries in
     nvf" manual page for more information.
 
+- Rewrite `vim.maps`, see the breaking changes section above.
+
 [NotAShelf](https://github.com/notashelf):
 
 [ts-error-translator.nvim]: https://github.com/dmmulroy/ts-error-translator.nvim