@JamboEveryone on Twitter suggested that this could be where they relocate the Carousel of Progress. He wasn't suggesting it as a rumor, just speculation.
It's hard to think they would leave that entire area abandoned in the middle of the park, but I certainly wouldn't rule it out. I think Epcot is becoming more and more disjointed. With a re-branding of DHS in the works, it really seems to me that Epcot will be the problem child park before the decade is out.
I just started a thread over in the Imagineering forum about how to Fix Epcot:
http://forums.wdwmagic.com/threads/fixing-epcot.897448/