Nah, I think this stew have been simmering in the Crock Pot for some time. AQ goes for shock value and they couldn't possibly coordinate something this large under the nose of French law enforcement. Say what you will about the French, they have an extremely good record when it comes to breaking up domestic terror operations.
This is the Arab street in revolt, alike to the Palestinians. An opportunistic AQ cell, however, has to be licking its chops.