What are the chances of hearing something from Apple prior to the actual refresh, or will it just happen one night in the Apple Store? I ask as I am planning on getting a new iMac as a post deployment present to myself. I won't be home though until late March/early April, so I have a bit of time to hold out. If we heard something concrete, I have the patience to hold out, especially if USB 3 is going to be included, if not I the current top of the line model has enough power to last me many years. Given what we know, when might we hear something RELIABLE as to the actual release date?