It hasn't been a year yet after VV3 has been released? Sonar is up to version 2.0. How much ground can Vegas 4 cover in one upgrade remains to be seen. They've had MORE than enough time to develop the audio side by now.
The only thing we can look forward to next in the near future upgrade wise is acid 4. I wonder if both vegas 4 and acid 4 will be out by summer NAMM. That would be the ideal time to announce sofo's intent on not forgetting audio.
I think (or hope) Sonic Foundry will bring Vegas up to speed on the audio side of the house.
I'd like to see the following
Hardware Control Surfaces support by Mackie, JL Cooper etc.
WDM and ASIO/Re-Wire support.
A simple midi seq.
Support for Software Synths VST& DXi
DX automation and the ability to record fader movement via hardware or mouse.
Audio time stamping
Reverse audio feature
Automation Envelopes for track and master busses.
5.1 surround sound with automation or offer it as a Vegas plugin.