It looks like Lion is going to be 64-bit only (although it'll no doubt run 32-bit apps just fine), as it requires a minimum of a Core 2 Duo CPU, so those with one of the Core Solo or Core Duo machines are out of luck.
http://www.apple.com/uk/macosx/how-to-buy/
Quote:
|
Your Mac must have an Intel Core 2 Duo, Core i3, Core i5, Core i7 or Xeon processor to run Lion. Find out if your current Mac has one of these processors by clicking the Apple icon at the top left of your screen, then choosing About This Mac.
|