It's not too different from what's already out there, but here's my translation of the new episode summaries:
Ep.38: “Universe 6’s Mightiest Warrior! Meet the Assassin Hit!!” April 10th
Scenario: Toshio Yoshitaka, Storyboard and Director: Kohei Hatano, Animation Supervisor: Naoki Tate
It’s a martial arts tournament between Universe 6 and 7, with Earth hanging in the balance. Vegeta’s final opponent is Hit, the strongest man in Universe 6. Hit is so laid-back it’s terrifying, and seeing this Vegeta realizes he must be strong. In fact, Hit is renowned as the greatest assassin in Universe 6…
Ep.39: “A Fully-Developed ‘Time-Skip’ Counterattack!? Is It Coming!? Goku’s New Technique!” April 17th
Scenario: King Ryu, Storyboard and Director: Ryota Nakamura, Animation Supervisor: Yukihiro Kitano
Vegeta squares off against Hit in his Super Saiyan Blue form, but Hit uses his “Time-Skip” technique to repeatedly attack Vegeta where it hurts, knocking him out cold. Trying to figure out the trick behind Hit’s “Time-Skip”, Son Goku likewise challenges him in his Super Saiyan Blue form.
Ep.39: “Hit Improves, Goku Declines” (provisional title) April 17th
Scenario: King Ryu, Storyboard/Director/Animation Supervisor: undetermined
Hit has the ability to skip time ahead just one tenth of a second. Goku counters this “Time-Skip” by predicting what will happen 0.1 seconds later, but Hit continues to improve as the battle wears on. And so Goku busts out the Kaio-Ken and fires a Kamehameha!
Ep.40: “The Conclusion” (provisional title) April 24th
Scenario: King Ryu, Storyboard/Director/Animation Supervisor: undetermined
The tournament against Universe 6 for the fate of the Earth has finally come to a close. Furious at Hit and his teammates for losing, Champa tries to destroy them. As Cabba and the others are frozen in terror, someone enters the ring…
Some people were confused about the talk of Goku "unsealing" the Kaio-Ken, but this most likely is a reference to how when a character has a technique that they avoid using (if it's too dangerous, powerful, etc), it is metaphorically referred to as "sealed". This is precisely how Frost described his final form a few episodes ago. And in turn, when desperate circumstances force a character to use a "sealed" technique, this is described as "unsealing" it. So I doubt there's any fancy, literal seal upon the Kaio-ken. Rather, it's just a reference to how the technique has always been risky, such that Goku only uses it when backed into a corner. He's using something that was previously off-limits. This is why in my translation I simply say Goku "busts out" the Kaio-ken.