Power Optimized and Power Optimized + store tags incoming, as soon as June. Basically, rather than a low power mode for Console, which is what Sony is doing, MS is taking a different approach to saving energy, with the games themselves being Optimized to reduce energy up to 30-35%. Like on menu screens, it would cut framerates, or in dark areas, reduce resolutions etc.
MLID thinks Sony's approach isnt really a Power saving mode but a PS6 handheld compatibility mode in disguise. He thinks MS approach is far superior as it doesn't limit the hardware cores, and gives devs a lot more flexibility.
As long as devs can demonstrate the targets reached, they can get the Power Optimized store tag, similar to Handheld Optimized.
He quoted Jason Ronald keynote multiple times regarding the portfolio of devices. And that the MS approach will give Xbox an advantage on Laptops and Handhelds compared to Steam. He felt good about a lot of Xbox decisions including the decision to cancel gaming copilot.
He said Xbox is doing a lot of good things to make developers work much easier to support the Xbox ecosystem.
Listen to the video anyways. There are more specifics.