1) I imagine so. Maybe not for streaming, but I'm not positive.
2) No, Zune HD is not related to Netflix at all.
3) That's going to be a problem for some, but they can download as they always have.
4) Time to switch ISPs if you have a CAP
5) I have Fiber Optic internet, so I really don't worry about it, but for those with Cable internet, this is an issue for sure.
6) HD is technically anything 480p and above visually. I don't know about sound... could see it going either way, but given that this is MS's answer to BluRay, don't be surprised if it matches that medium feature for feature. Then again, it may not be the case. I have Transformers on HDDVD, and didn't realize it wasn't in surround sound... sounded like it was to me.
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