What can be said about the upcoming Sandy Bridge Air vs. the rumored future Ivy Bridge Air on the following topics: 1. Timing and Probability: With the likelihood of Sandy Bridge/Thunderbolt/Lion packed Air appearing sometime near June 2011 at I'm guessing 90+%, what is the likelihood that we'll a) see an Ivy Bridge Air at some point, and b when? (e.g., around or after CES 2012)? 2. Graphics: how much of a graphics improvement will Ivy Bridge bring over Sandy Bridge, which apparently will be a noticeable graphics step back from the Nvidia chip in the current Air, particularly on gaming. 3. Heat: Sandy Bridge apparently runs hot (or at least the full-voltage chips do). Do low-voltage Sandy Bridge chips completely solve the heat/fan concerns for the Air? How big of a performance difference is there between Low-voltage and high-voltage Sandy Bridge? (Note: I have a Rev. B Air and if I'm going to upgrade one of my absolute requirements is that my next Air run A LOT cooler and much reduced fan action.) 4. Battery: I've read elsewhere, from the reputable Hellhammer I believe, speculation that Sandy should yield about a 1-hour boost in battery life over the current C2D. Can we expect further improvements from Ivy? How much? 5. Other Performance: What other general or specific performance benefits can we expect from Ivy over Sandy?