After 6 years A Perfect Circle are back

After 6 years away (wow that has gone quickly) A Perfect Circle tweeted out of nowhere today a simple message:

It’s On. @mjkeenan @puscifer @billyhowerdel

Josh Freese has tweeted he is excited (what that means for Weezer though?) and the @aperfectcircle account even threw out the question to original APC bassist (ex Zwan bass player) Paz (but they linked to the wrong account). However the band that James Iha joined on tour in 2003 is even asking the question we are all asking:

@james_iha Where ya at? 

The last we heard was that James was bunkered down finishing his follow up to his first 1997 solo release of ‘Let it Come Down’, does this mean it could be put on hold? 

So all we have is a band saying they are back, but no idea of the line up and who is in and who is out. Let the speculation begin, discuss on the forum.