Yes and no. The EPA has given full approval for E15 for use in 2006 and newer cars and trucks. There are a number of new stations here with E15. In fact they have a smorgasboard at each pump with E85, E15, E10 and diesel.I have been using 10 % ethanol fuel for the past 20 years with no ill effects dont have a choice because of smog rules ,but the 15 % has not yet been approved in the U.S. only being tested as of yet..
I was at a By Lo (Speedy) in Michigan the other day and noticed that the stickers on the pumps have been changed to read "may contain up to 15% Ethanol"