The corresponding blog post (https://nim-lang.org/blog/2020/05/14/nim-conference.html) says that the timeline will be published after the submission deadline has passed, which was nearly two weeks ago.
Any update on that?
The time schedule for the talks can now be found at https://conf.nim-lang.org
And you can now directly see the NimConf 2020 youtube playlist where you can click on 'set reminder' for the videos you would like to be notified before they air.