Earlier this evening firmware 2.2 Beta 2 was seeded to developers. In this firmware version Google Street View is enabled. Firmware 2.2 beta 1 included the APIs for Street View but the feature wasn't enabled.
Other things like push still haven't been confirmed but we expect to see push supported before the public release of 2.2. What are some features you want to see in 2.2?
Something else new that appears in 2.2 Beta 2 could be more options when getting directions via Google Maps. According to someone on iphoneyap bus and walking directions are now options in firmware 2.2 beta 2. It appears in the photos below that the bus directions even include bus schedule times.