I know no more than you, perhaps less. RN still saying 2012, which is clearly nonsense. Given the lead time they'll be streaming post-JEFTS for JSF sometime from 2009 onwards I'd guess, but how many and when is the critical point. My EFTS course in 79 was the second to stream 1 x FW for the SHAR.
Any chance he could go to university - and join in 2010? In the interim it also seems probable that the RN will want/have to take successful first/second tourist RW Ps onto an FW/JSF stream to have some more experienced guys around.