Here is what Gene from GMT said on CSW on June 27th.
We'll have all that info when we add the TS reprint and an update kit to the website - probably at least a month away. I just don't have details yet, but I know there will be an update kit available.
This was a response to the following question:
Never saw an answer to the Twilight Struggle Question. What else is new besides the map? If this is the only change, will it be sold separately?