Oh dip. This is a sultry unit. Toshiba is celebrating its 25th anniversary by dropping a true iPad killer into the fray. Billed as a ‘concept product’, a limited quantity of the Libretto W100 are being released into the wild as a test to see if consumers will dig it. Hell, I, for one, dig it. Just look at this thing. With a 62gig SSD, 2gigs of RAM, dual 7-inch screens at 1024×600, Bluetooth, WiMAX, and, perhaps most importantly, Windows-goddamn-7, the Libretto W100 sounds a lot like the future of mobile computing we were all hoping the iPad was going to be. This is a real computer, running real, grown-up…