Flash or HTML5 for Captivate 9

My organization is in the process of moving from Captivate 7 to 9.  While doing some research on 9 I came across a blurred about Captivate 9 being HTML5 based.

So, here's the question.....with Captivate 9, can I still publish as a .swf or is it exclusively HTML5 now?

I'm asking because our current LMS isn't working with HTML5 published courses.  It's supposed to, and they're working on it, but I need to know if we're about to run into a capabilities gap so I can point that issue out.

Thanks for the info.

Jay