ARM's partners are getting great use from Juno as a development platform, helping them get ready for 64-bit capable ARMv8-A based platforms. You may have seen that ARM has supported this platform with ARM Trusted Firmware (A thin layer of secure 64-bit firmware running at Secure EL3). ARM TF has proven very popular with partners who want to implement trusted boot and integrate a Trusted OS to create a Trusted Execution Environment. So its great to see that Juno is now being supported by OP-TEE an open source TEE that Linaro have been working on. You can find out more details by searching for "Github OP-TEE" where you can find the relevant git commits.