Board Thread:Questions and Answers/@comment-223.182.8.114-20180405101538/@comment-34263638-20180405115532

Believe it or not, it usually takes only takes two weeks to finish each act in SF2 and most of the acts came out one by one.

Also...

"This wiki is a standalone source of information for the Shadow Fight games. The contributors to this wiki are not Nekki and we don't control when an update will come out or what will be changed in it."

(Copying + Pasting and slightly modifying a comment made by Su712)