It has finally been set, the Cochrane Colloquium of 2026 will be held in Krakow, Poland, between 8 and 10 December 2026. 

Since the first conference in Oxford in 1993, Cochrane have invited researchers, policymakers, evidence producers, technologists, health professionals, community members, trainers, and learners from across health and beyond to meet and discuss everything related to evidence synthesis and it's use. 

You can find more information about the Colloquium from here. 

The call for abstracts is open, and the initial deadline for submission is 17 March. Check it out from here. 
If you want to get a glimpse from the first ever Cochrane Colloquium and how Cochrane was started, you can see a 6 minute video from here.