According to Friday's London evening newspaper London Lite (published by the same company as the London Evening Standard), Jamiroquai will not be signing up to another record company... 

"Jay Kay is leaving his record company to set up by himself, the Eye can reveal. The Jamiroquai frontman, who is releasing his Greatest Hits album next month, has confirmed that he will be leaving SonyBMG to be in charge of his own musical career.  Rather than go to another record label, the Space Cowboy singer will release future tunes directly online."

I guess we will have to wait and see what really happens in the coming months/years...