"This adds a new tab to the Notifications screen, tentatively called Conversations (final name TBD). The previous behavior is now a tab called All (which remains the default on the Notifications screen).
The Conversations tab is equivalent to the Mentions tab on Twitter. It filters out non-post notifications (follows and likes) but displays every post in your notifications (including replies, mentions, and quotes). Since it's not actually limited to mentions (neither here nor on Twitter), Conversations seems like a more precise name, but I'm open to calling it Mentions if there are strong feelings about that.
Note that this does not filter out any posts. On the contrary, it lets you read only notifications that are posts. The All tab did not work very well for that because it fetches likes and follows, causing posts (including quotes, mentions, and replies) to be easily lost behind the pagination boundary. Unlike All, the Conversations tab will only display posts (including quotes, mentions, and replies) so it should not suffer from the same problem and should reduce the likelihood of missing replies."
