Recently, 4Gamer conducted interviews with game developers and one of those developers was Kazuhiro Tsuchiya, the producer for the recently released Mega Man 11. In that interview, Tsuchiya had this to say in regards to what is in store for Capcom and the Blue Bomber in 2019:

“In 2018, we were able to safely release Mega Man 11. This is also a thank-you to all of the game fans. In 2019, I would like to make steady preparations for what’s next, so there may not be any major action, but I hope you can all watch over me with warm eyes…!
While nothing is confirmed nor denied, it seems as if Capcom does have an idea of where they want to go with the Mega Man franchise. In earlier interviews prior to Mega Man 11’s release, Tsuchiya stated that Mega Man X Legacy Collection and Mega Man 11 were the rebirth of Capcom’s focus on the franchise and that more would be to come. Fans have been asking for a Mega Man X9 for quite a while now but there is no guarantee that the game is in Capcom’s future. Tsuchiya even stated earlier this year that there are currently no plans to do anything with a Mega Man X9 title.
That was then, though and this is now. Fan demand and sales could lead Capcom to change their minds. We would also see a Mega Man 12 or even an entirely new entry into the franchise. So far, while no games are slated for 2019, a lot of new art books and Mastermix comics are planned to sate us until the next installment of the franchise… whatever and whenever that may be. At least Capcom has confirmed that Mega Man is not done by any means!