As I wrote... the active devs left are known. They could simply contact them directly, offer them vacant jobs and conditions (what to sign, payment and so on) and then someone will take a job or not
What makes you think there are no developers who are presently inactive, yet might be enticed to get involved again given some modest incentives? It surely does not hurt to try.
That said, I would agree that the announcement does lack details. Personally, I find it to be too vague.
