Originally Posted by Slim GoodBooty
It's a little different. Say the 51gb discs only work on second and third gen players. LOTR comes out on HD DVD. The average consumer will play hell going to the store and buying the wrong player. It can easily happen with BD, and will for months in to the future.
I think there's a big difference between "I bought this movie and it doesn't play on my machine" and "I bought this movie and one of the bonus features doesn't work on my machine".
And you can bet that any BD that includes 1.1-required bonus features will have that clearly labelled on the box.
If TL51 isn't universally compatible (and I'm not saying its not, mind you), then I think it will not find much use in commercially released software.
In videogames there's a very similar, very strong force as well usually called the "Lowest Common Denominator" effect -- once a new platform is released, whatever its specifications are is pretty much IT - all software producers will release for that specification. So even if Microsoft came out with a HD-DVD version of the XBOX (for example), no publishers would write software for it because it would segment their market and deny them potential sales.
The best you would get is perhaps a special addition or a special feature or two that requires it. That is pretty much what BD1.1 does - its just a way to incorporate some additional add-on features, but I doubt you'll EVER see a disc that requires BD1.1 to play the basic movie/content. Just like you never see a DVD that requires DTS - since DTS wasn't part of the original DVD specification release, no publisher would take the risk of requiring what is an optional feature.
If TL51 is universal or Toshiba is willing to do some sort of exchange/upgrade program to get rid of the players that don't work (costly!) then it will be relegated to the occasional "special edition" or maybe it will be used to store additional bonus footage or something.