In case you missed it (which is likely), Fujitsu has entered the Windows 8-ready fray with a convertible "tablet PC."
You probably don't remember tablet PCs because they weren't big with consumers. Nor businesses for that matter.
But they've been around for at least a decade. For instance, there's the Compaq-branded Tablet PC TC1000 that Hewlett-Packard launched in 2002.
Or the more recent -- relatively speaking -- HP EliteBook Tablet PC series.