Dumb Question in Today's Wireless

I apologize for the dumb question but ...

Where are we (North America, Europe, and Asian countries) in wireless technology? Are we in 3G yet or are we still in 2.5G phase? When can we expect full maturity of 3G technology?

If we are in 2.5G, what is the most prevalent technology? On the GSM side (EDGE? HSCSD?...)?

Thanks!