Rumor has it that the MKVII Golf will be built in the TN plant. To keep costs down, I won't be surprised if the GTI will be assembled there, too. It really depends on how much of the GTI they plan to sell. The R and possibly the GTD might still be made in Germany since they won't be selling a whole lot of those in North America when they hit the market.
Now, you may ask why not continue building the Golf in Mexico. I think at this point in time, the US needs to generate jobs so there may be incentives in place that will be to VW's advantage if they start building it in the US.
