Microsofts Next Media Format?

[ROBOTECHHEAVEN]

i would think they would use either hd-dvd drive, blu-ray drive or another format. i dont really care which one as long as their is plenty of storage for the games for the entire next gen of games. also i will stay in gaming which i love to death, as long as a system uses a phyiscal disk for the games. why, because i like seeing my game cases and also if u get a game on a disk u can trade it in, where as a downloadable game if it sucks u cant trade it in because its on your hdd.