The pack is official “Legend Awakening Pack”

It goes on sale March 4th, 2023

The cover card and key selling point of the pack is “Five-Headed Dragon”, the legendary Mythic Dragon from the original anime.

They mentioned on stream it’s extremely cool and powerful, and there’ll be something interesting to go with it, as at current, it’s currently unable to be Summoned by current rules since you can only have 3 monsters on the field and it requires 5 materials!

Source: Jump Festa