Though Taika provided numerous versions of the kata (for students to practice), it was only the basic version that was the (actual) correct version of the kata. Taika's additional versions were only to teach different principles to the students.
Personally, I believe this to be a good decision. Even when Taika was still alive, there were different versions of the kata being taught to students (making it difficult to determine what qualified as being basic/official).
Though not considered to be a "kata" (per say), the Spiderweb exercise is a very important practice tool for student's of RyuTe® (and in my own opinion, proves more practical for application to the new student).