As reported by user "RazorUK" of NeoGAF, the programming code of Titanfall beta would count some strings referring to prestige mode consists of 10 levels and called "Generations".

The same user added that the maximum level within the game would be the 50 level and once you get to that point you could start to advance with the various "generations" until reaching the tenth, obviously losing every time all unlockables previously obtained. Here's a screenshot that portray icons linked to the different "generations".