Surprise, surprise! It looks like, completely out of nowhere, Netflix has already started production on Marvel's Luke Cage season 2. There is no official word from Marvel or Netflix yet, but some new photos have surfaced online that seem to suggest that the second season of Luke Cage is getting set to shoot in New York, if they aren't filming already.

Some photos showed up on Twitter from various folks who spotted signs in New York for a production going by the name of "Tiara." During production, TV shows and movies have what is known as a working title. Since Luke Cage season 1 filmed under the working title of Tiara, it seems more than likely that these production signs point to Luke Cage season 2 already being underway. So it looks like we won't be waiting all that long for Mike Colter to make his return to Netflix's littler corner of the Marvel Universe.

RELATED: Daredevil, Luke Cage & Iron Fist Props Go Up for Auction

Luke Cage, as with the other Marvel Netflix shows so far, was a huge hit for the streaming service and won over both critics and fans. Luke Cage season 1 currently holds a very impressive 96 percent approval rating from critics on Rotten Tomatoes, with a 79 percent audience rating to go along with the critical acclaim. Netflix doesn't release streaming figures, but the show did well enough for them to officially renew Luke Cage for season 2 back in December. No official plot details have been revealed for the second season yet, but there is some hope from fans that they will be bringing in Danny Rand, aka Iron Fist, so that they can do some Heroes for Hire action. For those who may not know, that was the name of the Marvel Comics series that saw Luke Cage and Iron Fist teaming up to do odd jobs for money.

Spoilers for those who have not finished Luke Cage season 1, but the end of the first season saw the titular character heading to jail. So that is something that is going to need to be dealt with between now and the start of Luke Cage season 2. However, with The Defenders set to debut on Netflix on August 18, we can be certain that his fellow Hell's Kitchen hero buddies will be taking care of that long before new episodes of Luke Cage arrive. It could definitely be a ton of fun to see Daredevil and the gang breaking their fellow Defender from prison.

Marvel and Netflix have also renewed Jessica Jones for a second season, which is currently filming as well. Additionally, Daredevil has been renewed for a third season, which Charlie Cox confirmed will be shooting later this year. Iron Fist has not yet been renewed for a second season, but it is a safe bet that will be happening as well, despite the fact that critics didn't respond to that series very well. That said, fans really seemed to enjoy it. With Luke Cage season 2 also filming this year, it looks like we could see three new seasons of Marvel shows arrive on Netflix in 2018.