A little over a couple of weeks ago, Ubisoft announced that starting September 1st, Assassins Creed Liberation HD, will be pulled from sale, alongside a few more obscure titles. More importantly, they have also announced that they're shutting down all online features for a ton of their older games(full list here). What this means is that, in addition to no longer being able to play these games online, you will also lose access to all DLCs, regardless of whether you own them or not.