The performance is better, than 6.1.The Save On Deploy feature works amazingly well - I just save the files, and NB redeploys it in backround on GF.
The full redeployment is fast I takes 2-15 seconds to deploy the whole EAR with WAR and EJB-JAR. JPA creates tables for me in this time as well.
The new search for action feature works good. Just press ctrl+i and a keyword like e.g. deploy. The search will suggest you all available and related actions.
Because it works really well, I decided to use Netbeans 6.5 rc1 for the Netbeans World Tour event in Gdansk and Posen this weekend. No Risk No Fun :-).