A quick check on our own system confirmed the icon for the digital movie streaming service under the TV heading of the XMB.
Clicking on the application prompts a small 13mb download.
After tremendous success in North America, Netflix confirmed it would be coming to the UK and Ireland in 2012. At the time it didn't announce any platforms for its service — merely stating that it was targeting a "range of consumer electronics". It's safe to say that the PS3 was amongst them.
Unfortunately, while the service is visible, it doesn't actually run yet. Presumably this is Netflix getting the wheels in motion before the service's imminent launch. It's nice to know that the PS3 is prepared and ready to go, though.