I just noticed that there actually is a IG Reproducibility activity at the next plenary. I probably just missed the announcement, so in case you did as well: a joint session of IG Active Data Management Plans, IG Preservation e-Infrastructure and IG Reproducibility on "Tools Convergence: Integrating Data Management Plan and Preservation Tools" at Breakout Session 8. Saturday 17th 11:00-12:30 (https://rd-alliance.org/rda-8th-plenary-joint-meeting-ig-active-data-man...).
There are (at least) two more sessions which are somewhat related to reproducibilty, and I hope you don't mind the advertisement:
 "Container in scientific workflows and data preservation":
Photon and Neutron Science Community IG
Breakout Session 2. Thursday 15th 11:30-13:00.
It's really more of a discussion round, about usage and shortcomings of container in scientific data and software presentation, but ultimately closely related to reproducibility.
 "Granule metadata and data flows in data sharing and publications":
Joint Session of the RDA/Codata Materials IG and the Photon & Neutron IG
Breakout Session 7. Saturday 17th 09:00-10:30
This session deals more with smart representations of scientific data, to make data transparently and coherently accessible, interchangeable, processable, publishable. Topics encompass "frictionless data" , HDF5  and representations like ActivePapers  aiming at reproducibility. However, if one of this groups members could be tempted to put reproducibility into a more general context, we'd very much welcome your contribute to the session! Just let me know...
The sessions will have contributions and/or participation for example from DataPackages.org/OKF, HDFgroup, Daspos project, possibly Docker [4-7] and (hopefully many) members of the participating Interest Groups [8-9], so there is a good chance for interesting and fruitful discussions to which we'd like to invite you to join and enrich the discussions.
Best regards, Frank.