Not just announce it, you'd need to get instructions on building them to as many places capable of creating them as possible.

You'd probably want to get a torrent with the plans started, and distribute the plans with the replicator (say, by programming in the option to replicate the plans).

Then build a big replicator to use to replicate millions of standard sized ones and just start shipping them all over the world.

If you had trasnsporter technology as well, you could just beam replicators all over earth while trying to avoid anyone knowing who was doing it.

I guess though you'd also need a breakthrough in power technology, those replicators and transporters are surely power hungry.