Intel 7nm pushed to 2021-2022 timeframe according to the following article:
http://www.fool.com/investing/2016/09/02/intel-corporation-may-have-pushed-7-nanometer-tech.aspx
By then TSMC will have 2 FULL YEARS of high volume prod on their 7nm and will be well on their way to 5nm, if not shipping it already. So that means TSMC will have completely reversed Intel's original lead of 1 full process node ahead.