I found this information from steamcommunity:
"
25. marras 0.48
Z3TA+ 2.2 Update - Coming Soon™ [Updated 11/25 5PM EST]
Hi Everyone,
Unfortunately we're going to have to postpone the Z3TA 2.2 Steam update till Monday. We just found a 'Stop Ship' blocker issue and we can't properly test and verify a resolution before the Holiday weekend due to available resources.
We're sorry for the delay in comparison to direct customers, but we'll be rolling it out to you ASAP!
Thanks again!"