Vista 44.1KHz pass thru?

I'm looking at setting up a pc-based music server and have been debating whether to get a Mac, which will output 44.1KHz via a toslink output without any fuss, or a Windows XP-based pc, which involves bypassing kmixer.

My question is, does this situation change when Windows Vista is released? Will Vista allow a 44.1KHz digital output using Windows Media Player?

Is anyone out there tinkering with a beta version and can answer this question?

Thanks.