EF510-509 has been transferred from JR East's Tabata Depot to JR Freight's Toyama Locomotive Depot. -509 is one of the two EF510-500s, along with -510, in the Casseiopia livery.
It doesn't look like English or Japanese Wikipedia is updated yet, does anyone know if JR East has sold this one to JR Freight? I'm still a bit surprised that JRE bought all of those locomotives only to sell them on just a few years later. Or was that the plan to begin with? I'm just not sure what their reason would be for subsidizing JR Freight's fleet. It will be the tenth EF510-500 transfered if that's the case. I think -509 and -510 are two of the sharpest looking electric locomotives ever built.
http://railf.jp/news/2015/01/19/170000.html