So far, there are no plans for a 777-200LR purchase.
The A340-300 fleet will be kept to the current levels, while the 777 fleet should grow, as Mr. Spinetta, Air France's CEO said.
The reason why there are different configurations between the 747-200s is because they operate some of the on the French West Indies (with a higher density configuration) and some on the 'main' long-haul network.
The 747-400s will soon all have the same all-pax layout, 747-300s are all high-density configured, and... There aren't any 747-100 left in the fleet!
Here is what Air France fleet will look like
The retired fleets:
737-300 (on the long term)
737-500 (on the long term)
747-300 (on the long term)