15 September 2010:
your username is now red when talking in public, but your text is still blue as default
That is because of your clan chat colour settings. I set mine to purple, so I have a purple user name.
Not sure if that is technically a hidden update though.
More updates: Tiny Elf Crystal's invent image changed to the same as when dropped on floor
Potions (1,2,3) had a graphics update, same with jewellery and various armour. These looked badly clipped, so i'm assuming they'll be fixed soon.
* Armillary sphere now has a gold trim around it.