[Q] Tegra 3 And Windows 8.1

One of the current known complaints about windows rt is the lack of support for the Tegra 3's 5th power saving core. NVidia's website still states that support for Windows RT is "under development." Just wondering if anyone has heard about any further developments on support for this 5th core, and what that will mean for power saving and overall performance in Windows 8.1 RT. Thanks!