Let me get this straight...
You can now burn a blu ray disc on a mac, but you cannot currently watch blu ray on a mac? Are you freaking kidding me?
We need to see blu ray drives offered as a hardware option on all macs and macbook pros at the very least, and fully supported by mac os x. This is just completely ridiculous. Whether or not you like it, blu ray WILL be the industry standard and account for the majority of video disc sales by 2011!!!!!!!!!!!!
Burning and Playback both require extra equipment so it is not a one way street as you suggest. Personally on the playback side of things, I do not see the point in Blu-Ray on a 15" screen and doubt that it will be a majority of video sales by 2011, considering it has been out for nearly a year and has hardly dented DVD sales. This is just my opinion and is not intended to start an argument, but realistically you need screen that is larger than any laptop to see an actual difference.
Also, I am wondering where every stands on this update. Should I buy it know or wait until after they release Snow Leopard to see if they add 64-bit support? I would prefer to get it sooner because I am still using FCP 4.5.