Been following this for a while as it directly affects me (and @Doonhamer).
The BBC picked up on it today:
Wales' new national park: Plan to create country's fourth - BBC News (nice pic of Moel y Gaer hill fort in the article).
There’s a better map from an article from a couple of months ago:
New park will include the Halkyns, Hope Mountain, Ceiriog Valley, Berwyns and Vyrnwy area.