The summary from the development roundtable at Simucon this year regarding disarm was:
GM responsible for it is hoping to get back into it soon.
Can still be disarmed, but will not be permanent loss
So it seems like it's actively being looked at, but I wouldn't be surprised if it doesn't get rolled out closer to this time next year either. If it's an item you really care about either leave it in your locker for now or hunt stuff that doesn't disarm.
Plot twist! Disarm stays the same but recovery becomes automated for a few simucoins.
In the same vein... it's not possible to lose armor though, right? It won't get looted?
I lost my first ever mithril broadsword to a hill troll outside of the Hanging Inn 20-sumthin years ago. Took my first couple of weeks playing to save for it too!