Yes, Cubasis VST for PC is included with GPO. The features are limited, I\'m doing this from memory so forgive me if I\'m incorrect, but the features include at least four VSTi slots (meaning you can have four instances of GPO open at once, each instance allows 8 instruments, thats a total (8 x 4) of 32 instruments), I believe, 32 MIDI tracks are available and 8 audio tracks. Limited to 16-Bit and 48kHz (I\'m assuming).
Sorry I can\'t be of more help on the features but I use Cubase SX and only installed the FREE Cubasis to tell a friend the features when I first got it weeks ago.
Personal Orchestra includes a comprehensive orchestral sample library, Native Instruments\' KONTAKT™ sample player, GenieSoft\'s Overture™ LE notation program, Cubasis VST™ (for PC) and AMBIENCE Reverb. All this for just $249.