RO6 for IYONIX is indeed purely a ROL issue - period.
That Ad6/VA work together with ROL is no surprise, since they need ROL's OS, whereas CTL does not. If ROL (or whatever other company) wants to supply software for any computer the work is in their ball park. Question arising is why ROL doesn't seem to want to supply the intersting Select features like the enhanced Apps etc. as normal apps for RO5 - that is surely possible, other suppliers manage to supply apps for RO5 too. OK, ROL keeps on claiming that that is not possible due to their kernel being so different; this might be important for a few things but most Select features can be done on RO5 for sure. Furhtermore they simply state that they don't know the hardware and thus can't supply a full OS - who wants a full OS anyhow?
A while ago ROL claimed they need 100 IYONIX user wanting Select - well they stated to have 130 and I assume that more would buy something ROL has to offer ... if they do really offer something. My personal impression I get from whatever information about IYONIX Select is that ROL doesn't really want to do IYONIX Select but instead of clearly stating so they keep blaming the lack of progress on others, be it that 130 IYONIX Select wanting users is too little, that CTL doesn't help them as much as they want to, lack of resoruces, lack of paying IYONIX Select subscribers ....
Furthermore if they would really want to get the IYONIX users to part with money for Select they should offer the new Paint, Draw, Trashcan, Image Filer, Image Convert etc. as a software bundle for RO5 at a resonable price. I know that quite a few IYONIX users would be interested in just that - as a matter of fact I'm not sure I even want a ROL OS for my IYONIX pc - why pay for a complete OS and perhaps tackle with the odd issue and problem just to get the odd enhancement when those enhancements could be supplied as add-ons to the current one?
As for Merlin my guess is that CTL was more or less forced to ditch it since it kind of died after the legal dispute ROL-CTL where one result was the impression that desktop RO is ROL's game and furhtermore AFAIR ROL started to promise to supply Select to IYONIX so that both companies doing the same, i.e. supplying the odd RO desktop enhancement would have been a waste of resources.