I saw it in it's out-of-town tryout in September and thought it was great. Whatever you do, DO NOT expect the movie on stage - it's darker than the film as they've brough a lot more from the books in, but there's still magic when it's needed. However, the main thrust of the narrative does focus more on the problems within the family which some people (esp. younger children) have found a little dull.
The dance routines are a knock-out, especially in Supercalifragilistc... and Step in Time though I thought that Jolly Holiday - now transported to a park with living statues - was the a bit of a low point in the show. Alongside the familiar Sherman brothers tunes there are some new songs by Stiles and Drewe (who also wrote Honk! and a beautiful Peter Pan) which are usually effective. Practically Perfect and Anything Can Happen are particularly good.
The physical production is as brilliant as you'd expect from Disney and Cameron Mackintosh, from the huge house set to the more simple (but equally effective) roof tops and chimneys of London. I'd definately recommended seeing it!
The CD is released at the end of March and can be order below
Dress Circle