Steinberg released an iOS VST wrapper so they and others can resell to the iPad crowd. With Cubasis supporting Apple’s Inter App Audio standard using instruments and effects not part their DAW becomes very much like using VSTs on a desktop. The tech is in its infancy and experiencing the expected growing pains but SB is in the forefront of traditional music software vendors exploring the iPad market.
Cakewalk adopted VST3 with their latest Sonar incarnation (X3.) Reaper will be VST3 compatible when version 5 is released. I’m sure other DAW’s will follow. As for plugins, an increasing number of developers are starting to release VST3 versions of their products. It might take longer than Steinberg expected, but VST3 will definitely become a standard.
Synthedit is also beta testing a version 3 SDK that pumps out VST3 and compatible plugins, so a large number of freeware VST/i SE based plugins might become available in the near future that are VST3 and 64bit compatible.