I mad this thread last night. I'm hoping the forest area behind the snowy mountain in the top right that you can see under the cloud is some sort of area where available Pokemon are rotated weekly via wifi. --- Official Ansem The Wise of the Kingdom Hearts 3 board.
Well if I remember correctly, they covered up parts on the Johto map prior to HG/SS. But that was to hide the added areas. So while it's possible, highly unlikely since there's no reason to for a brand new region. --- "Everyone step back. Me and this Jigglypuff are going to tangle and I don't want anyone getting hurt."