There exist several mobile and touch gui focussed OS from the heritage of OpenMoko & GTA04. For example: Replicant, QtMoko, FSO, SHR and more. They just need a little polishing and some people are keen on doing that provided that they get newer hardware. A Pyra-Phone does not necessarily mean you have to use Pyra-OS on it. They share hardware components and kernel but there will be multiple GUI projects to choose from.