Some good elements of old-style King which really makes it very watchable show.
No more comedy like "Under the dome" or a sad excuse for screening of an amazing book like "11/22/63" that turned out to be... well, I don't know what it was but definitelly something veeery disappointing.
"Castle Rock" is good, or even very good. So far, the level of creepiness is satisfying and the story is fine slow-paced with some "wow" elements.
Hope it gets even better.