Calendar for launching
I would create a simple website where you can post on a calendar where you want to launch your product.
I think that it would help project owner to maximize attention, it could also help People to learn from other user technique.
I don't know if product Hunt does it if it is the case i m dead wrong.
I don't believe that Product Hunt has a "up-and-coming" launch announcement feature.
The main concern that comes to mind is that the startup would have to have done the MVP and market research and know that the product will be good because you could have 1,000 startups announcing stuff on this Up and Coming site and then have 800 of them cancel because they have to pivot and aren't sure what to do anymore.
That might be why a lot of people don't announce stuff until it hits product hunt.
Your right uncertainty is the main problem thanks for the reply