I think they'd plan on showing the world championship tournaments/games in non-Olympic years, various championships such as European Championships for sport X and Asian Championships for sport Y. Plus for the Olympic games, some sports have qualifying tournaments, so they could show those, for example, wrestling has been restructured again, 16 entries per weight division, only one entry per country plus the host country (At least I think the host country isn't included in that 16) so there are several qualifying tournaments.
And as you stated in another post, they'll have info pieces on various athletes; I imagine as the Games drawn near they'll really promote those.
I'm guessing the channel will probably end up revolving around track & field sprints, swimming and gymnastics.