I can't help but think that Vista -> Windows 7 is an example of this pattern.
Win3 > Win3.1
Win95 > Win98
WinME > WinXP
Vista > Win7
Win8 > ? (unlikely to be 8.1)There are probably some parallels to Longhorn/Vista. Except it seems like with Vista Microsoft bit off a lot more than they could chew, and had to massively scale things back for release.