No. At least Athom knows, but they don’t give a official date.
Not really. There are several threads, e.g. this one, and also in different languages. Problems may occur with one user, but not with others. Some problems are also only in combination with some apps, mostly apps for Zigbee devices. The main reason for the v5.x firmware is the rewrite of Zigbee.
The Fibaro app runs stable for me. I can’t say anything about Klikanklikout and Gelepo.
Homey runs stable for me in the meantime. In between, however, I had massive memory problems.
