I don't like how every forum and web site update seems to be required by law to increase white space and reduce the amount of useful content displayed on the screen, but I guess there's no point in complaining about that here.
I also noticed that clicking on a subscribed topic now brings you to the first page of the thread instead of the last. Hopefully that can be fixed.
I'd also like to see a return of the blue and white color scheme. This new (default?) monochromatic scheme is bland.
But still far better of a transition that other forums I belong to which switched from vBulletin to XenForo.