I'm not a fan, but did see the post. The video says episodes will be uploaded to the site in groups of 12, two weeks after the final episode of that group airs on toonami. Doesn't say how fast they'll catch up to the TV episodes, but if only going to run 2 weeks behind, I would expect a fairly sizeable upload to the site almost as soon as they start. It only says that 39 episodes will be uploaded on December 5. I'm not sure what episode number toonami is at.
13 episode batches, not 12. So episodes 40-52 will air after episode 54 airs on Toonmai.