There's no such connector on Beomaster 6500, so I don't suppose it would've been brought back for 7000. The Powerlink connectors (and the separate TV/AUX connector) take up the space that used to be in the connector bay for stuff like the sensor socket.
So there's no off the shelf solution, but it would not be too difficult to hook up a TSOP7000 IR receiver in parallel with the receiver circuit already in the Beomaster. No two way then of course, and in my experience the integrated modules don't quite match the B&O circuitry in receiving range.
In addition, why would anyone want to hide a BM7000 in a cabinet?