Ask HN: Social app with future marketplace - advertise now or wait?

Hello,

If you were about to launch a social app - within 1 month - that will feature a marketplace in the next version - let's say, at least 6 month - would you advertise about the marketplace already in the first press release or would you wait later?

Basically, soon we'll be ready to launch the social part of the app, and I guess in 6 month we will be ready to launch the new version with the marketplace.

In this first press release, for example, would you say:

"a social network for vinyl lovers that soon will become a marketplace as well"

or just

"a social network for vinyl lovers" and then when we're ready send another press release saying "hello, we got the marketplace now!"

I was thinking to build first the community and then launch the marketplace with already a good amount - hopefully! - of users and potential sellers

Please let me know your opinion

Best, F