Work has slowed down with other developers, but has not stopped. I don't remember when we released the last version, so its hard to nail down what features are new, but here is my best guess of whats new in the trunk:
* Low memory handling
* Connection handling
* Grand Central contact support (Not merged yet, Maemo contacts are still in the pipeline, having a working SDK would make it go faster but still having problems with that)
* Fullscreen (untested)
* Menu bar on desktop (tested), Hildon Menu on device (untested) with limited clipboard support (tested)
* Bug fixes
* Code cleanup

All this while still trying to maintain a low memory/processor footprint especially by trying to keep our HTTP roundtrips down.