Some things are getting mixed up here. SCSI T10 is not a replacement for VAAI, it is the collection of al standard SCSI commands.
1. The T10 Committee defines the commands in the SCSI standard and they can be found here: http://www.t10.org
2. For vSphere 4.1, the T10 committee has adopted some new scsi commands as suggested by VMware, to specifically accellerate some storage functions in virtual environments. The precise commands are on page 10 of this TR: http://media.netapp.com/documents/tr-3886.pdf
3. In vSphere 5, some more general scsi commands are used for further accelleration. They are also defined by the T10 committee (as every scsi command is), and is up to the storage vendor to adopt these commands. Actually, many of these commands are not really new, it is just that VMware starts using them in vSphere 5. So chance is that ONTAP already supports most (if not all) of them.
As for NAS plugins, new versions of VSC (2.1.1 or 3.0) and the OnCommand Host Plugin, these are not yet released right now. To be more precise: the OnCommand Host Plugin 1.0 was released, but then pulled back. It looks like we have to wait for Q4 this year. Some more information can be found in this KB article: https://kb.netapp.com/support/index?page=content&id=3013124