Disney have seemingly been testing different paint swatches on the Communicore building, perhaps in preparation for a much needed update to Future World.
It's no secret that Team Disney Orlando have majorly neglected Epcot for a long time now. Future World especially, which hasn't received a facelift in years, and as any recent visitor would notice, it doesn't exactly look very futuristic anymore.
It should then come as no surprise that Disney seem to be testing out some new color schemes for the buildings. WDWMagic reports that the top of the Communicore has had different paint schemes added to the top panels, possibly as part of a 'swatch test'.
Whilst it'd be nice to be able to say that it looks like Future World is finally going to see some love, it's likely that this will just be a fairly low key repainting of the buildings, and perhaps a few minor updates to signs, lights, etc.