The counters for Replies, Agent and Private now work the same as Likes. Thus, anything new since your last visit in the related list will appear as new.

Messages, Replies, Likes, Agent, Private and Online have been moved to the first portion of the toolbar for standardization and priority of those options.

Search in Calendar is now under Search in the third pane.

Likes for all messasge is now under Reports at the first one.

Time indication in the toolbar is deprecated.

You may force a global refresh to get the update if you haven't not done so.