There will be 1x738 based at STN this summer. (May-OCt) As far as I know it has not been finalised yet but will probably be an American or Canadian registered a/c.
LIkely to be initially recruiting for temporary summer contracts with the possibility of being kept on over the winter at permanent bases.
Would expect the routes to be the bog standard charter destinations such as AGP, ALC, PMI, MAH, ACE, TFS, LPA, FUE, CFU, ZTH, RHO, CHQ, DLM but don't have any firm knowledge of routes.
Hope this helps