I'm playing everyone's game, and I think the HTML5 version is so cool!

I want to know if I can release the HTML5 version even I released windows version already.

I saw the following sentence on the rules page:

Porting (especially to Web or Windows) can happen after the initial 48 hours. The longer you wait though, the less time participants will have to play your game.

Does it mean I can still release the HTML5?