No they won't daz, the new ones will just be pricey making you think you got what you paid for
360's at moment get the HD DVD addon but it's not true HD DVD as it still runs through USB and will not play true HD on a HD TV, it's meant to allow bigger games mostly.
Microsoft will release a full HD DVD 360 as thats the format they support and it's needed to keep 360 alive when the PS3 comes out
xbox live is a yearly subsrciption but I get free online on my original xbox via a program on my PC, 360 will be compatible in time
