Regarding the forums. Is there a way to filter so that you only see V4 posts

If not is there a way to filter the post so that you only see ones that are with a particular timeframe, 2025

When you search, you can add before: and after: date filters, e.g. after:2024-12-31. You can combine that with searching in certain categories of the forum, e.g. OmniFocus.