Energy Star 3.0 Specification
The interesting thing about the 3.0 standard is that there isn't any grandfathering, so all manufacturers will have to comply in order to receive the Energy Star rating. September 1, 2010, is the date 3.0 is scheduled to come into full effect.
Some manufacturers are already producing televisions that meet or exceed the 3.0 rating. The Pioneer KURO PDP-6020FD is one model that already meets 3.0 requirements. (read review) JVC announced earlier today a line of televisions that exceed the new 3.0 standard by up to 60%. (read press release)
Of course, if you're interested in seeing how much power your TV uses then check out my review of the Kill-a-Watt, a device that measures power consumption of whatever electrical component that is plugged into it. (read review)