Sony's released PS3 Firmware 4.30 and there are a few changes that you may want to know about.
As previously mentioned, trophies now come under the PlayStation Network section on the XMB, although they are now kept online, meaning that you'll need to wait for your trophies to appear from the server. This seems to be so that users can view their PS Vita trophies alongside the PS3 trophies, although once it's synced for the first time the loading times are significantly reduced.
Trophy mode does include an offline mode, which can be accessed by pressing triangle. So if you aren't too fussed about syncing your trophies after the first time and just want to view them, then this is a speedier way to do it.
Apparently the new Singstar icon is also online now, allowing users to gain access to the game straight from the XMB, although we have to admit that the icon didn't appear when we updated our PS3 this morning.