Not sure what you mean. NVIDIA publishes thermal and power specifications for GTX 470/480 too:
http://www.nvidia.co.uk/object/product_geforce_gtx_480_uk.html
The one line item that is no longer present from before is "Maximum Graphics Card Power". This spec is pretty meaningless to most users. The far more important spec is "Minimum System Power Requirements". Interestingly, the minimum system power requirement for GTX 295 is 680w, while the minimum system power requirement for GTX 480 is 600w. The minimum system power requirement for GTX 470 is 550w. Maximum supported GPU temp is the same for all three of these cards.
Lots of people in the past have used very power hungry setups such as 8800 GTX SLI, GTX 280 SLI, etc. I don't remember most of the reviewers making too much of a fuss about power consumption or temps back then for these high end gaming cards. But all of a sudden the reviewers go on and on about it? Go figure. It will be interesting to see what consumers say about the cards when they are available.