According to Greek iPhone site iPhone Hellas, Apple will be releasing the next iPhone software update on November 21st. Included in the release are most of the features we've been expecting. So we will have to wait 10 more days to see if this rumor is true or not.

Regarding the features, iPhone firmware 2.2 will probably incorporate:

Let’s wait for ten more days to confirm the news. But one thing that probably most of you concerns is whether jailbreak works on firmware 2.2. iPhone Dev team has confirmed earlier that it works! (based on the beta version of iPhone 2.2)