If you're planning on buying it anyway, and don't plan on waiting in line at the Apple store the day it comes out, maybe you'd like to buy it at Amazon and throw us a referral? They've set up a special landing page for you to get all the details - right over here (The W at Amazon).
Keep in mind this'll only work on Intels - if you have a PowerPC, you're stuck at 10.5 (and probably need to think about upgrading some time in the next 24 months).
Staples has what appears to be a very good deal on the I-River H10 20GB mp3 player this week ($170). Does anyone else have one of these or have an opinion on whether it's a decent option instead of buying an i-pod?