Even though L.A. Noire sold well and briefly entered the collective consciousness, the closing of developer Team Bondi left many thinking L.A. Noire may never be revisited.
However, in a Q&A on Rockstar’s official site, Rockstar says that L.A. Noire 2 is indeed a possibility:
“While there won’t be any more DLC or additional content for the current release of L.A. Noire (we’re all too busy working on Max Payne 3, GTAV and other games to come), don’t count out the possibility of a new game in the L.A. Noire franchise in the future. We simply have not decided anything. We’re all very pleased with how that game turned out and are considering what the future may hold for L.A. Noire as a series. We don’t always rush to make sequels, but that does not mean we won’t get to them eventually – see Max and Red Dead for evidence of that – we have so many games we want to make and the issue is always one of bandwidth and timing.”
As long as you can play in black and white again, I’m sold.