The refurbed A319's have 132 seats (vs. 126 on old config) with AVOD and AC/USB powerports. It's a complete refurb (not just a "refresh").

http://mjontravel.boardingarea.com/2...a319-aircraft/

The refurbed A319's are known as the "31J" model --

http://www.delta.com/content/www/en_...-a319-31j.html

Here's the seatmap for the old config A319's --

http://www.delta.com/content/www/en_...-a319-100.html

Yes, the seats were renumbered. Same number of FC (12), C+ (18), and Preferred (18) seats.