So sorry but Lenova has been shipping WIN RT Yoga powered by Tegra 3 for over two months and still is. Check their website. Microsoft has been shipping the Win RT Surface and ASUS the Win RT Vivo Tab powered by Tegra 3 for almost 3 months.
Sammie gave up on Qualcomm this week but Dell is still hoping Qualcomm will get their drivers certified so they can ship. At least that's what they officially say.