Payday 2 is doing a tie-in DLC with the upcoming Keanu Reeves-shoots-a-bunch-of-people movie John Wick (which looks pretty stellar, actually - and has a ridiculously-great premise of a former hitman tearing apart the mafia because someone killed his dog) that's due to include John Wick as a playable character, some additional weapons, and a few other doodads (new sunglasses!). We like Payday 2, John Wick looks neat (and somehow has 100% on Rotten Tomatoes at the moment), but overall none of this is THAT notable or exciting.
What IS notable and exciting is the WAY the DLC was announced - the good people at Overkill Software put out a nice big press release (as is custom), but at the very bottom of the release, they added a section for the TL;DNR folks:
Yep - it's available tomorrow and completely free. Hats off to you, Payday 2. If only all DLC could be done this way.
Also, in case you were curious, here's the trailer for John Wick: