The newest version of the NCDA Clustered Data ONTAP NS0-156 exam does cover 8.2 material. It is now released and will be the exam used at Insight this year. This exam still uses the term vserver instead of the newer storage virtual machine (SVM). The next version of the exam (8.3?) will, however, use the new term. NetAppU plans to again have certification prep sessions this year at Insight to prepare those for the exam.
I don't see the 8.2 new features on the site, only the 8.1.1. Any idea when that will be up?