That's when it'll go fully live (and anyone will be able to submit new securities for listing etc).
CIPHERMINE.B1 (and DMS if we list there - which looks very likely) would be live and traded significantly before that date. As soon as an actual date is finally agreed I'll post it here.
I have also now confirmed that all of the key functionality we need will be present from the start (in fact that had been clarified for some period in documentation - but due to a misunderstanding I didn't have access to that but it was thought that I did.)