Ford still haven't fullt revealed the plans for the next-gen toreass...
But they have came out and said that:
-In 2014, there will be a Falcon upgrade, to take us to around 2018...
-In 2014-15, there will be an all new Mustang, with
IRS
The rumor (as in, its been suggested) is that the Taurus will use a stretched CD4 platform, to replace the old, borrowed D3 platform...thats all.