Nothing to get too excited about but probably worth noting. The avatar limits have been amended, the maximum width and height is still 90 by 90 but we're now allowing images up to 60kb in size to accomodate some more animated .gifs.
Additionally, images will now be resized if they are greater than 800 pixels wide, as opposed to the previous limit of 600.
UPDATE: For the moment I've restored the resize fix to 600...800 proved to be a bit too wide.