It's good to see new investment, but I'm concerned with the fact that some of the new additions really don't have anything to do with Lego. According to the site you linked to, the 4D cinema has apparently added Bob the Builder to the list of shows, in addition to the Sea Life aquarium. What the hell do either of those have to do with Lego?
After visiting Legoland Windsor last year, I was rather disappointed with the place, and I wasn't entirely sure why. I had fond memories of Legoland Denmark, which (many years ago) really was a Lego-centric attraction - it had rides, but the Lego theme was prominent throughout the park. In my mind, Legoland Windsor felt like more of a generic park with Lego in it. Sure Miniland was really impressive, but the Lego theming throughout the rest of the park seemed at best half-assed. I'm concerned that future plans include more generic attractions, but I suppose we'll have to wait and see whether they continue to develop attractions with a stronger Lego theme.