I've seen numerous threads around this on the forum, asking about a sandbox / dev environment.
Since the last 5-6 years, you have been giving the same canned responses each time.
Is there really any intention or desire of doing this at all? If not, please be honest and stop wasting everyone's time (including your own) and just let everyone know.
If there is, then give us some relevant information, a tangible timeline, or tell us what roadblocks you are facing to implement this! Give us something. Except another canned response!
The project had to be shelved because of some technical issues. With current setup it is not possible to offer sandbox environment. We are exploring alternative ways of providing this.
Is there any progress, updates, or blockers on this, as it has already crossed the ETA you provided?