It might be a way of showing that if you ever think about upgrading to PRO, you better buy the PRO version all the same. The prerelease offer is more about some extra bonus material. I think the prices will stay the same. For 208.90 euros the pro version will come to my front door (including a t-shirt, a book with tips & tricks and I think I qualify for the Mdelaflor book as one of the first 50 preorderers...). I am lucky enough to use it professionally, so I did not give it a second thought. Now I really have to learn Amapi...