Valve has announced its plan to delay this year's International until some time in 2021, confirming plans to restructure the competitive season as well as a slight delay to the next battle pass.
Naturally, the move is down to the ongoing coronavirus pandemic, which Valve addresses in the statement shared on the game's official blog:
After extensive consideration of the global health emergency stemming from COVID-19, we have made the difficult choice to delay The International. We have been exploring various date possibilities, but it is likely that the event will need to happen in 2021. Given the highly volatile landscape for local gathering restrictions, virus trajectory, and global travel policies, we don't expect to have enough confidence to communicate firm dates in the near future. In the meantime, we are working on restructuring the DPC season for the fall, and will be providing more information as soon as we have it.