The document discusses developments in IETF working groups related to M2M (machine-to-machine) communication technologies. It summarizes discussions and status of documents in the Constrained RESTful Environments (CoRE) and Routing over Low power and Lossy networks (ROLL) working groups. It also provides an overview of the IPv6 over the TSCH mode of IEEE 802.15.4e working group (6tisch). Key topics covered include CoAP specifications, RPL routing protocol, sleep support in CoRE, and deterministic scheduling in industrial IoT networks.