No, not at this time. You can put in a feature request (aka idea) at Lightroom CC | Photoshop Family Customer Community
At the moment, best solution is to save the photos as JPEGs and use alternative software, perhaps something like Keynote if you're on a Mac, or import the exported JPEGs or sync the photos into Classic to use for a slideshow.
We have to remember that LR CC is a 1.0 release. Features will come (I hope). My fingers are crossed.
I check daily for updates
I suspect, we all have tools that are missing. Patience, I keep telling myself be patient Monty....
I agree with Victoria, Keynote works wonderfully for slideshows and presentations.