Well, as the only announced non-Gloranthan RQ item is supposed to be Mythic Iceland, I would think it would be tailored to that. Hopefully going a bit further into Greenland, and the home lands... to give us a bit more room to roam.
If their Medieval supplement for Cthulhu ever sees the light of day, and it ranges early enough in period, I might just move to Cthulhu for my non-Glorantha fix.
SDLeary