Oh yeah, 11 is new, in a HUGE way. You can install both 11 and 10.3.6(its gotta be 10.3.6). PT11 does not work with any RTAS plugins at all. The reason for the co-install is, so you can work in 10 with any current RTAS plugins. Give it about 3 more months or so for all the 3rd party plugins to get ported to the new AAX 64 bit format. Once that happens, 11 will be killer.
