Just as we surmised, Seagate is taking the wraps off its new hybrid drive, with OEM shipments of the Momentus XT starting today. Hailed as the fastest 2.5-inch laptop drive on the planet, this here device marries a 7200RPM hard drive (250/320/500GB) with 4GB of Flash and 32MB of cache, and the company's Adaptive Memory technology allows it to store frequently used information on the latter for ultra-speedy access. It can boot up to 100 percent faster than a conventional 5400RPM hard drive, and thankfully for us all, it utilizes a standard 9.5mm-high form factor that the vast majority of laptops use.