Mio has announced the official availability of their new GPS devices: the Moov S501 and the Moov S401. The Moov S401 has a 4.3″ inch display and the S501 has a 4.7″ display. Both will have a “Spirit” interface and will have Google Send-To-GPS functions. NavPix will provide location-pulling frompohots and there is a text-to-speech feature for street names. MioMore 2 PC software will have a way to calculate mileage and fuel economy. The S501 is the thinnest personal navigation device to date at 0.64″ thickness. The S401 is 0.71″ thick. The S501 will cost $200 and the S401 will cost $180 and both will arrive in June.