Too much of what passes for Apple news is recycled gossip about what Apple might be doing.
From iMore‘s well-connected Rene Ritchie:
An external GPU (eGPU)-powered Apple Display won’t be among the things announced at WWDC 2016.
There’d been some speculation on Twitter and rumor reports about Apple possibly introducing a display with an integrated eGPU. Theory being, it would take some of the graphical processing overhead off MacBooks and/or facilitate a single-cable connection that could drive 5K. It sounds cool, but I asked around, and it’s not happening at the keynote or any time in the immediate future.
I suspect it’s easier for an in-the-know Apple employee to tell a reporter what isn’t happening than what is.