It's scheduled to reopen on July 15.
It's the same layout, although it's all new. New Track, new Queue, new platform, new effects, etc.
I for one am glad that they didn't go with the DLRP style ride. The old layout was fun, not too extreme.
I think I saw somewhere that the height requirement went from 40" to 44". I wouldn't be surprised to see Big Thunder follow suit.