They will be updating the current map and making changes to the highlighted areas. If you have a base in one of these areas (like I do!) you may want to look into how this will affect you. I will update with more info as they release it.
http://www.inquisitr.com/3079086/major-ark-survival-evolved-biome-changes-inbound-start-prepping-now/
http://www.inquisitr.com/3079086/major-ark-survival-evolved-biome-changes-inbound-start-prepping-now/