Agreed. It's a week away, and if you upgrade now, you'll need to upgrade to the official version then anyway.
As stunningly awesome as rotated keyboards for texting and email might be 🙂rolleyes🙂, there's nothing that can't wait seven days. It's nice, yes, but it's not incredible.
Unless you tend to lose your iPhone and are a MobileMe member. Then it's pretty cool. But it can still wait a week. You'll still have it ahead of all the 3G S buyers. 🙂