Lots of sites have stories on the new ARMv8-M announced this week at TechCon 2015:
http://www.theregister.co.uk/2015/11/10/arm_trustzone_armv8m_mbed_os/
http://www.eweek.com/security/arm-brings-trustzone-security-technology-to-iot-devices.html
http://www.anandtech.com/show/9775/arm-announces-armv8m-instruction-set
http://hexus.net/tech/news/industry/87980-armv8-m-architecture-launched/
