From what I was told, all of GF's Airbuses will become two class - they are merging the old J and F together into a new product, called Falcon Gold. The plan seems to be that if you buy a discounted J class ticket, you get the J class seating, and if you buy a flex J class ticket you get the beds up the front - but the food and service are the same.
No one seems to have told check in though - I went both ways in row 2... and I paid a cracking fare!
TA