The answer is that it very well could, but work still has to be done on ProPresenter's side. Our development team has made most (if not all) updates needed for ProPresenter to hook into our service. Other programs like Proclaim church presentation software and OnSong are already using the "APIs" that we've created, in a way very similar to how ProPresenter could use them.
At this point, it's really up to the folks at Renewed Vision (the makers of ProPresenter) to do the development work needed for the integration. But you can help them make this a priority!
What You Can Do To Help
Below is a link to the support center for ProPresenter. If you'd like for them to integrate with WorshipPlanning.com, submit a ticket and let them know.
And if you feel inclined, you're welcome to post a comment to share whatever response you got back from them.