https://twitter.com/LAValiant/status/1052997798243663872.
Gunba is joining Boston Uprising : https://twitter.com/BostonUprising/status/1052997754710974464.
As for SoOn and daemoN, nothing official yet (LA Valiant website only mention "an Overwatch League franchise to be named later") but they're presumably headed for Paris, as the leaks revealed earlier.
Discord