We're up to probably plan R or S by now, but no havn't heard that one.. I don't think that the 190 gives the ability for a mixed class of service that Airtran touts itself on and does it econimocally. (before anyone jumps on and says that the 190 can be configured in two class seating, notice I said economically, i.e 12 to 16 business class seats not 6-8)
Maybe the 195 is a possibility. Now I do remember reading somewhere that Joe mentioned if the Midwest deal goes through, that they would be looking at larger regional jets for midwest connect maybe in the 70 seat area.
I've always said that this airline will eventually be a 3 or 4 different type aircraft airline.