Yep, heard this when I phoned the UK Apple Store, yesterday.
However...I phoned a local Apple dealer who told me that 'now and again companies require a machine without a keyboard [it's what he said!], so I should be able to get you one within a week'.
Perhaps people who just want a Pro keyboard, can live without the four media keys (like me), should contact their local dealer.
BTW, my local dealer can also get OEM Radeon's, SoundSticks and other 'only from Apple Store' products. Interesting.