mrmac: "Again as on the other thread if we are all on one OS there is more chance missing software will be made to work on the version everyone is using as there is a valid market on RO5 to sell the updated product to... "
I ask again, what missing software? There is nothing that runs exclusively on RISC OS 5 other than things which specifically require Iyonix hardware. If there isn't a valid market for software now, everyone running RO5 will make not a slightest difference.
RISC OS is a modular operating system where practically every part of it can be enhanced via replacing modules and via hooking in software vectors. When RISC OS source is available the individual components can be enhanced and soft loaded over the top of whatever existing OS version is required to support the machines hardware.
Development effort needs to go primarily on writing new applications, and secondarily on enhancing the operating system. No time whatsoever should be given to this obsession of getting the same number in everyone's Task Manager info box - as that is much difference running the same version it will make to anyone in practice.
Ignore this advice and all the will be left of this platform is a few people pointlessly fiddling with the sources trying reinvent drivers for 13 year old machines, while all users of RISC OS have deserted it because there is useful nothing to run on the OS regardless of any enhancements.