Keystone Thrills just featured an update that shows off some minor work going on in the suspected area of the new coaster. A ton of site markers are still in the ground, and some items in the area have been moved around. Nothing earth-shattering, but forward progress nonetheless.
It'll be interesting to see if the park teases us all this year until a Fall announcement of the ride, or if we'll get an early Spring present and find out the details. Either way, it still seems the park has something big up its sleeves.