A SCEE rep's confirmed to VG247 that the firm is to publish Ghostbusters, as rumoured earlier.
A press release is expected around lunchtime today.
We're waiting on comment from Atari.
The move likely means that non-PlayStation versions of the Terminal Reality title will struggle to find release, although it was reported earlier that Atari may publish the 360 version itself.
There's no official reason for the swap to Sony as yet, although this probably isn't the sunniest thing to have ever happened to Atari on a Wednesday morning.