Here is some information about Titanfall's "prestige" system. Prestiging in the game is regarded as 'Regenerating'.
Max level is set to 14 in the beta files. However if we go by the level progression unlocks (last item is at level 49), Level 50 being max is likely.
There are 10 generation ranks. I believe generation 1 is what you start the game with.
Here is some of the menu text taken from the beta