PolarSSL to be rebranded as mbed TLS to signify its importance in the mbed ecosystem. As part of the mbed ecosystem, mbed TLS will provide the core for secure communications and cryptography to the rest of the mbed products.
Also later this year mbed TLS will change its main license from the GPL to the liberal Apache license.
In November 2014, we published the happy news that PolarSSL was now part of ARM. Since then we had kind of a radio silence on a number of fronts. There were a lot of things to take care of, and making sure PolarSSL was integrated properly into the ARM ecosystem was one of them.