Typically, you don't announce that you're in talks with supplier X unless you want to pressure supplier Y. While high level discussions are almost certainly going on, the key point of the announcement is to get TSMC to break a bit on pricing, so NV can keep those margins up. Timing wise, it doesn't make sense for NV to be hinting at this unless they're negotiating with TSMC for pricing right now (which means 40nm chips -- perhaps layout for GT300 didn't go so great, and they need a lower price-per-wafer to make a business case for it?)

All speculation and I'm sure that Gregg Bartlett, Jim Kupec and Doug Grouse have been talking with Huang, but this "revelation of talks" is just posturing. When GF announces that an agreement has been reached, or that NV has become a partner for 32nm or whatever THEN something will have happened.