So, I'm in a pickle... I'm using my 15" MBP which I purchased in April 2010, and I think it's time for an upgrade. I'm thinking about getting a MacBook Air as well as a 21" iMac so that I have a more portable device as well as a bigger screen for home use. Is it worth waiting for the refresh? Do we know when it may even happen? Do you think I should get a different combination of devices? Just one? I know that's a lot of questions, but I always have to check on here before I make a purchase because I know all of you know/will think of more things that I do! Thanks so much.