I attended a CNATRA brief about 6 months ago and this was the company line wrt the T-6:
The original aquisition was not enough planes and all the planning required was not in place. Whoever CNATRA was at the time decided to pass on the T-6 for pilots and give it to the NFOs who needed less planes and were at a base that would be effected little by the change. Was this a good decision? That is still being debated, but probably so.
The T-6B should (not a shall) be at Whiting in '09 and not a bit sooner. The sh!tty brakes and landing gear will be fixed, it will have a true glass cockpit with a MFD based system, and I have heard (not confirmed) a HUD. It will not, however, have beta. I don't know what the plan is concerning OLFs and split field ops.
My opinion: The T-34 is still doing a great job training pilots, but it is a tiny bit antiquated when compared to newer aircraft (60R-S, Osprey, F-18) that are currently in use. I will say, however, that anyone who has ever made the leap from steam to a MFD based display system will tell you that it is not as difficult as you may think.