We don't make estimates, as a rule. Me guessing at a date I can't guarantee does nothing but put pressure on me and set expectations for the audience I might not be able to keep
The weekly logs are as transparent as I can be in terms of what I've gotten done in a week and what I have left in the update. When I finish Production and we begin Post-production is when we make an announcement with a hard date, until then Progress Logs are the best I can do