After a year of teases and speculation, Apple yesterday formally announced the iPhone 3G, a faster, GPS-enhanced version of last year’s iPhone. Planned for release on July 11 at a starting price of $199, iPhone 3G will be available in the same 8GB and 16GB capacities as today’s iPhones, and sold in black or white plastic versions. Once the dust settled from the announcement and data service prices began to emerge, we asked our editors…