
"Version 2.0 for the Virus TI adds Graintable, Formant-based oscillators and enhanced Wavetable synthesis. The new operating system introduces Section Locking for the Virus Control plug-in, searchable patch categories, 25 additional Wavetables and 256 additional signature ROM sounds, an improved user interface, a patch complexity indicator as well as loads of other refinements."
via Harmony Central
PDF of OS2 previously posted here