Been using it for 2 days now, and I'd say its getting better all the MAC OS Like features when opening applications and new scroll bar design and fancy menus. BUT I always prefer the
classic desktop with all its menus :p ...
By the way I liked the way it asks you to fill and finish the information ex. setting up the time, account and personal settings while installing (simultaneously) and also you can view the installation progress in a small rectangle shell to see whats really going on under the hood.
I bet 12.04 would be nice cause it will be LTS and many people at work can rely on.
*** I would also like to add regarding Classic ubuntu desktop is that you are not entitled to use the new ubuntu unity mode in 11.04.The good thing is that you can login back to classic mode during the Login Screen, by choosing which mode that suits you classic or classic(no effects) or ubuntu (unity). So you can be jailbroken from unity if you don't like it :)
Below is a screenshot of the modes you can use: