E-15 for Marine Use

The President has anounced he is going to allow use of gasoline with 15% ethanol added to stretch the fuel supply in the US.  I went to my outboard book and they, in bold letters, said do not use E-15 gas in your outboard.  Now we are talking about newer four cycle outboards. We should still be able to get E-10 or better (non-ethanol) gas but just be careful what you buy.  Morrrison's sells ethanol free gas.