The app's inner workings haven't really undergone any changes. It looks like the new stuff is purely cosmetic in the form of better graphics courtesy of Vincent15100.
If you haven't tried this app out yet, it lets you use an ad-hoc connection to chat with a friend. There's a range limit, though. PSN Messenger's maximum working distance clocks in at 30 meters.
Download: PSN Messenger v2
Related homebrew articles:
- AFKIM: Instant Messenger for PSP v3.3.5
- LUA Shell with Adhoc Messenger 2.7 (formerly Unofficial Adhoc Messenger)
- Adhoc Messenger V2.0: new features
