I want to wait a moment before expressing an opinon; the first impression is that it is a little bit more difficult to follow, but I suspect it depends from the fact we have switched form so little time and we need more time to appreciate the new layout. In this layout we can see all the followups, not only the direct replies and this, in my opinion, can be an advantage, considering that not all the people here use the reply link

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Seen in my account recent activity (?)

The time frame filter is cool, but I do not like not to have a favorite tag overview!
When they now will add beside the timeframe drop-down a type dropdown to filter comments or faves, I am pleased... And superhappy if there is a stat about what was visited lately without leaving a comment or fave (yes, that happens :)

And the Group feature is really cool!

What about reply´s to your comments? I can´t find them, am I beeing blind or???

This could be the reason, because i only get any activity shown, if i select “Last week”, unless there WAS activity since my last login ...

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Seen in dirk home page (?)