There is not enough in 2.2 to make it worth my while, but I though I would at least let you all know. The jailbreak for 2.2 is already out. Link to more info here.. but I’m still going to hold off.
Here is what I’ve heard is in 2.2 from gadgettastic
The iPhone 2.2 firmware will have a host of upgrades, including a new look Safari with built in Google search in the title bar.
There will also be the addition of the Japanese emoji icons, support for additional languages, and Line in audio that can be used though the headphone jacl.
On top of that there will be Google Street View, and Google Transit, which will provide directions and details on public transport.
There will also be changes to the App store, with categories now showing icons of the apps instead of the current list.
There is still no word on whether this update will see the addition of copy and past, you never know Apple may slip that one in.