As part of the recent deal with Castle, RISCOS Ltd are to change their name, and surrender the riscos.com domain to Castle. As a result RISCOS Ltd will be changing their name to "RISC OS Developments", and have acquired the domain "riscosdevelopments.com".
Asked on the timescale for the move to the new domain, Paul Middleton, MD of ROL told The Icon Bar "It will be done piecemeal over the next few months." he also commented on the design of the site saying "A revamp of the all the sites is planned but no overall design concept has been decided yet."

Links:
RISCOS Ltd (riscos.com)
RISC OS Developments (holding page)