Who wants to be the first to speculate on what this will mean for Bitcoin?
I would speculate that PayPal and XAPO have been in (in)formal discussions regarding the future of payments on the Internet. It would indicate that they value the services that XAPO offers, but that they are not willing or ready to associate themselves with bitcoin too closely just yet. But, I think, they do want to be 'closer' to the latest developments. I think PayPal has a lot to offer XAPO in terms of access to an incredible scale of customers. XAPO can offer PayPal knowledge, expertise and real-world experience with bitcoin. I would not be surprised if - given enough time - some kind of integration would become visible. Who knows, maybe PayPal will just buy XAPO
I however don't think this will do much, if anything, for the bitcoin price immediately. It strengthens the bitcoin foundation, but these kinds of stories have less and less impact on price. (Sure, if PayPal were to start accepting bitcoin - that would be big enough for some price movement, but adding a crypto enterpreneur to their board of directors would not have significant impact I think).
If bitcoin continues to grow, prove its value to regular people, enable ways of working that were impossible or impractical before, empower people directly - and all that good stuff - then it will grow in user base, and importance. All it really needs to do is "not screw up", and let the central banks around the world destroy the currencies that they pretend to be superior. Bitcoin will emerge from that as a clear winner.