Rumour: Official Firmware 2.40 screens and walkthrough next week
According to this NeoGaf post, Sony will release first official screens of PSN Trophies, profiles and in-game XMB next Monday.
The post also says that a video walkthrough of new PSN features it to be released on the same day.
Behind the scenes chatter in the past day has all pointed to official activity surrounding Firmware 2.4 next week. We can but hope.