Dear P4 Community: The Computing in the Network (COIN) IRTF research group will host a P4Hackathon at IETF 105 in Montreal on July 20 and 21. The goal of theHackathon is to give the COIN community a way to investigate newapplications in P4 and develop prototypes of potential newapplications. As of now a lot of P4 development has focused on datacenters but we would like the Hackathon to address the DC-edgeprogramming spectrum. Topics of interest include industrial applications for faultdetection, data filtering in streaming media, autonomous devices atthe edge and distributed networking. Participants will be providedwith all the tools necessary to create their application. Registration is already open at: https://www.ietf.org/registration/ietf105/hackathonregistration.py <https://www.ietf.org/registration/ietf105/hackathonregistration.py> For more information about COIN, subscribe to their mailing list <https://www.ietf.org/mailman/listinfo/Coin> or visit their wiki <https://trac.ietf.org/trac/irtf/wiki/coin>. We hope to see you there! -P4 Language Consortium <https://trac.ietf.org/trac/irtf/wiki/coin>