Originally Posted by aurora40
Additionally as time goes on, newer apps will stop working with 2.2 before they stop with 2.3. The new Firefox only supports 2.2 and above. How would you feel if you still had a 2.1 phone your manufacturer just didn't feel like updating. That's how we will feel soon on 2.2.
It looks like this may be beginning:
Dashboards | Android Developers
There are more devices on ICS (21% of devices) than there are on Froyo (14%). I can't think of any new apps that are 2.3+ only, but have to think that will start being the case. If you design an app for the 80% case, that now means 2.3 or greater.