Edwin Suijkerbuijk
Explorer
He's all but saying Ebberon in 2018, with the mentions of Keith Baker and how he considers Ebberon a core setting alongside FR and Ravenloft.
Early after 5th edition was released Mike was asked if we would see the Eberon and dragonlance campaign settings.
His awnser was that they would only do these campign settings if they could get the right people that could do these setting justice.
Basicly no Eberon without Keith Baker and no dragonlance without Margaret Weis.
So Keith Baker working with WOTC might indeed be a big clue to the working on Eberon.