Hey Jps7101,
At the moment there are no plans for Epic to integrate the full PhysX SDK into UE4 beyond what’s already available for destruction. HOWEVER, one of our community developers, Backov (Jason M.) has integrated it into his own build of the engine and he does hope that when he’s done with it to submit it as a pull-request so that it can be integrated.
You can find more information and a demonstration of his work here: I've made a new Destructible Mesh Editor for UE4 - Community & Industry Discussion - Epic Developer Community Forums
His version eliminates the need for PhysX Labs or the PhysX DCC Plugin to create destructible assets. I’ve got an early build of it that he demonstrates. I’ve talked with him and have a build of the editor to help him test it out and offer some feedback.
Feel free to ask questions anytime. If there is a setup with Destructibles that you’d like to see just post here and I’ll do what I can to get a simple example up, similar to the other ones I’ve got. 