Submitted for 1.2.6, this website is now testing the secondary activity feed avatars. On this site this mainly means ‘Groups’ since we aren’t using multisite and have the ‘Friends’ component disabled.
Also, some of the deprecated style activity feed items are currently showing mixed styling and results. The format changed a little over a year ago, and there is still a bit of testing to be done to ensure 100% compatibility.
Please report any issues here if you see any!