Mid-March? April?? Post-June???
Please tell me you are kidding. It's been almost 8 months since the last (real) revision, which isn't that bad, but add another 2+x months on top of it and the current MBP is starting to look stale for a $2000+ device. My current PowerBook is still great for private use, but I need a powerful Intel-based portable for professional use ASAP, and I don't want to have any Windows or Linux-based device that doesn't even stand up to the breathtaking usability of my PowerBook.
And I don't just mean OS X, although nothing compares to it, it's also the hardware. It's simply amazing how much performance Apple manages to squeeze into notebooks as thin and lightweight as the MacBook Pro. Also, I've seen bad trackpads on non-Apples and I've seen moderately useful ones. Only on Macs have I seen ones that really really rock! Then you get all sorts of high-speed ports with power supply on the MBP. I could have all that now, but I simply wouldn't forgive myself if I buy now and a cheaper or faster Penryn-based MBP with faster GFX comes out in a month or two.
I don't care if the next rev doesn't include all the goodies that Apple would like to introduce in Q2 or later. The improvements I named above are ok for me. Well, support for 2x4GB would not hurt either, of course, even if 4GB are sufficient for now. 🙂 I just hope that Apple will give their high-end notebook customers a sign that their money is well spent with or without Montevina.