Strange. Excerpt fom Serkan's file: "This list includes all puzzle ideas weve received so far ... Serkan Yürekli, Sep. 2012". Maybe Serkan maintains the catalogue, but he includes only TVC puzzles, not variations published elswhere.
However, here are three examples of Tapa variations not included in Serkan's catalogue:
Tapa (Unique Clues) by Tapio Saarinenhttp://www.gmpuzzles.com/blog/2015/01/t ... -saarinen/
Tapa (LITS) by Murat Can Tontahttp://www.gmpuzzles.com/blog/2015/01/t ... can-tonta/
Tapa (Clueless Clusters) by Prasanna Seshadrihttps://prasannaseshadri.wordpress.com/ ... -clusters/
(Sorry, I don't have the time to check all Tapa puzzles on my hard disc against Serkan's catalogue.)