hy,
there is no exact release date for the new exam.
After all, after you did it with with 1.2, nobody will question your ability to get the 1.4 exam.
In my opinion, this exam is a good point to your CV, but it is your experience that really matters. Having 1.2 or 1.4 on your certificate won't count much.
Mfg
Rudi
SCJP, SCEA I