Just as expected, Sony just announced the PSP Go! at E3 just now -- Haz Kirai called it the "worst kept secret at E3." The slider handheld has a 3.8-inch LCD, built-in Bluetooth and 16GB of internal storage, all in a case 43 percent lighter than the PSP-3000 -- a weight savings we're guessing is directly attributable to the loss of the UMD drive. That's right, the Go! doesn't have a UMD drive -- games will instead load in through the Memory Stick Micro slot or over PlayStation Network. That's not the end of the classic PSP, though -- Sony says it will "live on."