[brabel]

Java almost never removes a feature, specially not one so widespread, there's millions of Javadocs out there based on HTML. I expect they will let you choose forever... having two ways of doing something so basic is probably going to be more annoying than just dealing with the extremely small inconvenience of writing a little HTML.

[seadan83]

Sounds more like HTML by default and markdown as opt-in. I wouldn't assume it's going to be a required flag when generating javadoc for what the input format is. Perhaps the javadoc generator could even become smart enough to detect which one is being used.