Read this recently Pentax patent, the Pentax SR system is adding axes!http://www.google.com/patents/US8208032Btw, there is a body diagram for illustration purpose, but don't imagine too much for an upcoming "new" body. Look:-Well, actually it is an *ist D, just! Just compare yourself!(Credit: http://www.bdimitrov.de/kmp/bodies/ist_D/ist_d.html)