I can confirm this. We were there this past Monday and got to do everything. It is very much like the first HP world at Universal Orlando but more compact. For rides there is "only" the Hippogriff and Forbidden Journey (now a 3D ride). DS and I were very excited to see that it was open while we were there. One of the staff members said it had been open for about a week. I do believe that the restaurant was not yet open for business but the shops (including the wand shop) were all open.