Quoted from Edenecho:
A friend of mine talked to him in denmark at the ifpa world championship. No info on timeline, just that he is working on a last update, and it will make it possible to actually finish horde. But we will see. Didnt the final metallica update come quite a long time after it was released?
That's useful, appreciated. I'm very happy with it now (except that it rips me a new one on a regular basis) but it's always good to know there could possibly be a little more polish coming.
Looking at the Stern code READ ME text files;
V1.0 - April 30, 2013
V1.64 - April 23, 2015
V1.7 - June 19, 2016 (~14 months after last, over 3yrs after first)
V1.11 - Oct 28, 2014 (although my game came with older code than this)
V1.53 - Nov. 23, 2015
V1.56 - Dec. 1, 2015 (about 20 months ago since last, under 2yrs since first).