If there's anything major comes up TJ/SSS-wise, I'll mention it here. Daisy Hughs (Carbon/Silicon's manager) is now looking after both groups.
The only thing unveiled so far is a guest appearance on Tomoyasu Hotei's 30th anniversary album later this year, for which SSS have recorded a new track.
Most SSS fan discussion happens at http://launch.groups.yahoo.com/group/sputnik/
If you're a facebooker, then an official SSS page is forthcoming. Well - actually - it already exists, and is currently accessible via http://www.facebook.com/pages/Sigue-Sig ... 5898680054
... but it hasn't been 'officially' announced anywhere yet
(be careful not to accidentally sign up to the Sigue Sigue Sputnik facebook group which belongs to the Philippine street gang of the same name
... or get confused with the Martin Degville project "Sigue Sigue Sputnik Electronic", which has nothing to do with TJ and the other sputniks)