Great, all the occurrences of the selected identifier are marked, as in 6.0 and 6.1. Now how do you navigate between those marked occurrences? Wouldn't it be cool if you could hold down the Alt key and then use the Up arrow and Down arrow to navigate up and down the occurrences that have been marked? You can't do that in 6.1, but in development builds, that's exactly what you can do.
Vladimir Voskresensky from the NetBeans C/C++ development team in St. Petersburg told me about this on NetBeans Day. It's something he committed to the NetBeans sources, after having initially created it for the C++ editor. Thanks Vladimir. One thing I noticed is that the selected identifier suddenly changes while I am navigating, so that I can't navigate all the way down the list because the marked occurrence suddenly changes.