Andrew Banks wrote>"Correct me if I am wrong, but didn't ROL have a license to RISC OS 4 and to its further development. "
Yes they have a license to update RISC OS 4, but there are limitations to that license about which no one who knows seems willing to divulge. ROL licensed RISC OS 4 off Acorn/Element-14. e-14 subsequently sold that "head license" to Pace - who had it for a few years - Pace then sold it to Castle. So in effect Castle have the *main* RISC OS license (which grants them access to updated apps/utilities (like later versions of BBC BASIC) and tools like the C/C++ which ROL *don't* have).
Andrew Banks wrote>"Has Castle now licensed ROL for RISC OS 6 ?"
No why would Castle who own the main RISC OS license need to license it off a sublicensee ROL. Besides as RO6 is really a 32bit RO4 and as Castle *already have* a 32bit RISC OS (RO 5) there's no need for them to do so.
Andrew Banks wrote> "The Guildford show this weekend should be very interesting"