If you're getting a bit bored playing Overwatch's current set of maps, I have good news for you: the game's director, Jeff Kaplan, mentioned in the Overwatch forums on Battle.net that the team currently has three new maps in development for Quick Play and Competitive modes.
Kaplan also said they've passed the initial playtesting phase but cautioned that "something could always change." In the event that everything works out, he said that a release this year was "likely."
Of course, that's not the only thing the Overwatch team is working on; Kaplan mentioned that three non-standard maps (not QP or Competitive) were also in the works along with various other experiments. Considering that seasonal events have kept the fanbase engaged over the last year, it seems pretty likely that potential new events are part of those experiments.
Overwatch's latest seasonal event Uprising began just a few weeks ago, in which players experience a pivotal moment right before the fall of Overwatch.
Are you excited for new Overwatch maps?