In this post there is a link to the progress update for last month. The linked presentation also includes updated roadmap and contribution statistics.
For more information or to get involved, the Trusted Firmware Project maintains the following mailing lists for developers on mailman:
tf-a tf-m tf-a-tests
Details on how to join these lists are on the Contacts page
Trusted Firmware A (TF-A) is used widely throughout the Arm ecosystem. It’s been joined by Trusted Firmware M (TF-M) reference code which supports the Arm Platform Security Architecture (PSA) program. By becoming a member of this project, your organization will be able to steer the strategy of the project. If you would like your organization to be a member, please get in touch with enquiries@TrustedFirmware.org for more details.
Bill Fletcher Linaro Community Projects Division