Changelogs like "Bugfixes to cffi and ctypes" are pretty useless. Do these bugs affect my code? Is my code going to explode horribly if I don't upgrade? Is my code going to explode horribly if I do upgrade? etc.
I know this is useless for you, but be a little understanding, most releases that are genuinely useful contain tons of stuff like "we fixed performance of this corner case" or "we fixed this obscure crash" etc. What else would you suggest to put there?
Also, how on earth is what you wrote related to ARM JIT support in the title?
Your concern whether this release may break your code is only a test run away ;) But seriously... this is a valid, and common concern. I'd assume they are not intentionally introducing breaking changes, considering it's still targeting CPython compatibility. Also, there are no explicit breaks mentioned -- but I guess it might be good to communicate this explicitly.