There have only been three main entries in the past 15 years…
"Including Mega Man 11, the latest entry in the franchise, Mega Man is one of Capcom’s historic IPs and is loved by fans, and as such we want to take care in how we develop the series,” Capcom replied.
“We are considering how to approach the production of new entries in the series, which requires numerous factors, including the development of a solid concept, ideas and gameplay, etc.”
Would love to see more X style games personally, but I wouldn't be opposed to seeing Capcom take a big risk and try to modernize the franchise too. Was always intrigued by the Maverick Hunter gameplay footage personally although I know it's somewhat polarizing.
Honestly, at this point anything that ins't a mobile cash grab game would be fun to dream on at least!
A new take on the X series would be rad. I never really understood why the OG series kept coming back over X, because X felt like an improvement on the classic formula in every way to me.