Yes. There's been some talk that the HDMI transmitter chip the PS3 is using can somehow not handle bitstream of HBR audio codecs, so buying a receiver with support for such codecs only because you hope the PS3 will someday transmit them is a waste.
Personally, I don't expect to be using my PS3 for BR-D forever - especially now that Sony has announced a BR-D mega changer for early 2009. FINALLY.
I don't expect to use mine as a BR-D forever either. I am pinning my hopes on 1080p TruHD digital distributed movies. I can dream, can't I?