The LH.com booking engine is being changed market by market to the layout pioneered on the Swiss website. So you mix and match fare types and classes while booking, although the fare classes are named for dummies (flex, basic, etc), not by the actual fare class (Y,B,M,E or what have you)

As far as the domestic availablility of E (99 fares) is concerned, they are opening up availability again this friday: http://www.lufthansa.com/online/port...nodeid=3092362