It's all in the first post, and it happened last July. The main thing I noticed is the battery now lasts a lot longer, particularly when I leave my Pandora around doing nothing, and the battery charge text now goes negative to tell you how long it'll take to charge. Other changes are nice to have, and may be more helpful in the future, but right now they don't affect anything I'm using.
As for the reason this thread was bumped last month, Notaz released a new build of a text mode web browser, which you'll probably never consciously use. You can get it by doing a pandora OS update, I think.