First thing I noticed with the home screen widget, is that it isnt' actually the same size as the other widgets, the left hand side is about 1 to 2 mm smaller. Not a major thing but can be quite annoying on a visual sense.
Still finding the interface moving from timeline to messages etc pretty slow, hopefully that will be improved in future releases.
First time I loaded it, the images shown in the timeline were not coming up at all, now they do, but it seems to be unconsistent.
The look of the program, could still do with improving, the icons are a little bit washed out, not keen on the overall blue that was used throughout, the facebook site its self has a blue colour, which should have been used throughout the app, but again this is only a visual thing.
It is better than the existing facebook app anyway which really does need improving, and i'll be using this as my main facebook widget for now, just to do a bit more testing on it, looking forward to the first proper release though.