Yes. There’s no guarantee that there will ever be free transfers from any server. There have been some in the past, and there are currently some. The ones available at the moment are from the 3 servers with apparently, the longest queue times.
There is no guarantee that the destination realms will continue to be the same destination realms tomorrow, or that there will continue to be free transfers tomorrow, for that matter.
Having said that though, it is unlikely that Herod will ever be a destination realm for free transfers, as historically, the destination realms tend to be the lowest population realms. For some reason this time, Netherwind (a medium population realm 4.5K+ active raiders) is one of the destination realms.
Paid transfers are available to any realm, with the normal restrictions, e.g. you cannot transfer from a PVE realm to a PVP realm. The reverse is Ok though.