PowerVR SGX545 supports DX10.1 (http://www.dvhardware.net/article21698.html), PowerVR Rogue supports DX11.1 (http://www.anandtech.com/show/5364/powervr-series-6-rogue-gpus-released-to-licensing). ARM Mali-T604 supports DX11 (http://www.tomshardware.com/news/ARM-GPU-GPGPU-Mali-T604-Mali-400,11616.html). Tegra 4 supports DX11 (http://www.hi-technonews.com/nvidia-tegra-4-to-8-core-processing-directx-11.html). All the new ARM SOCs that will be released later this year (and onwards) will support either DX10 or DX11.
I am sceptical about the reliability of some of those sites.