Somehow I missed this but wasn't showing as an update in Omnisphere on my system till today.
 
Was released on Nov 27, 2018
Changes:

• Updates Initial Multi file

 
I installed a 3rd party patch library this morning and my Omnisphere started to malfuntion (dead & distorted patches) after I installed update problem cleared.  Could have just been a fluke but just mentioning it in case anyone else had a similar issue.