Dear RIPE IoT WG, the third RIOT Summit (http://summit.riot-os.org/) will take place in Amsterdam, Netherlands at the Science Park Congress Center on September 13-14, 2018. The first day is dedicated to single-track presentations. The second day allows for break-out sessions and coding. If you want to attend, please register as soon as possible: https://riot-summit18.eventbrite.com/. This is a great opportunity to meet the community behind RIOT, the friendly open source operating system for the Internet of Things. **Talks** Keynote by Jaime Jiménez (Co-chair of IETF CoRE Working Group and Master Researcher @ Ericsson) More speakers: http://summit.riot-os.org/2018/#speakers **Social* After the talks of the first day, we have organized a casual BBQ at the Rolling Rock Kitchen (http://rollingrockkitchen.com). Food is sponsored. **Hotels** Please note that Amsterdam is pretty crowded during the week of the RIOT Summit. Book soon! You should also consider options such as hotwire.com, airbnb, or accommodations in Utrecht (~40 minutes by public transport). **Registration** Participation at the RIOT Summit is free of charge. However, registration is required: https://riot-summit18.eventbrite.com/ *Supporters** We gratefully thank the following companies for their generous support: Cisco, RIPE NCC, SIDN Labs, STMicroelectronics, wolfSSL, Zühlke. We also thank Freie Universitaet Berlin, HAW Hamburg, and INRIA. Looking forward to meet you in Amsterdam! Cheers matthias -- Matthias Waehlisch . Freie Universitaet Berlin, Computer Science .. http://www.cs.fu-berlin.de/~waehl