The forum software's been upgraded so you might come across the odd change or extra feature here or there (maybe even a bug or 2 :(...but hopefully not).
A couple of features you will definitely notice are:
- the new mobile site, making browsing, posting etc on your iPhone, Smartphone or 'vintage' model mobile much easier;
- Activity Stream (click on the Attachment 956 icon top left)...showing a 15 day history of what's been going on on the forums
Enjoy!