That board isn't going into the Edge controller. The Edge has 'replaceable' sticks and those modules slide in/out the front, that board there has them soldered in place.
Yeah thats why it was my speculation that theyll use the holtite or mil max sockets so the sticks can slide in and out cuz I dont think they want to license the patent Logitech used on the Astro c40 for hot swap since they didnt license Corsairs scuf flexible paddle patent and it looks like they went with some funky sideway switches. (Cant really see them clearly in the announcement pics)
Edit: I got curious and went and searched through the fcc filings for Sony corporation, the edge controllers pictures, internals, and the way it operates are under temporary confidentiality until the end of September unfortunately. I almost had them but they were smarter this time lol