Apple are attending but not exhibiting at NAB 2012, which is next week. I had been thinking that we would see a Mac Pro updated before (more likely) or during (less likely) NAB 2012, but it is now looking more likely that the MP update will be quietly released alongside updated MBP 15s towards the end of the month (best guess would be week commencing 23rd April). Given Xeon E5-26xx workstations have NOT yet been released by Dell and that the HP have only just launched a few more weeks wait for updated MPs seems likely. In a sense Apple have quite a bit at stake here having made a complete mess of the FCPX launch, where if they had waited until multi-cam support and a few other features that have now been added in updates were ready they would have received a much better reaction. And yes I know most of their revenue comes from iDigitialDistractions, but I think they want success in all areas, particularly as Mac sales are growing and margins are very high. Now here's a thought, once we have new Mac Pros with Thunderbolt then, for power users, using a 27 iMac as a display may make more sense than the 27 inch Thunderbolt display, as it would give you an extra 4 cores of processing for 700 - 1100 USD.