Lunatic has been updated for the block updated which comes with couple of changes and a new addition to his/her kit.

Block has been updated to the new block(duh).

Movement abilities has no changes that I would note

Most of the attack moves didn't receive change except for 1.

Rising Slash now takes in momentum, meaning rising slash can now go heavily to the left or right, enabling new combos, and disabling old combos(goodbye soul rush into rising slash)

Special move has been affected the most in this update
Headache is still the same
Mirror walk now uses old Forceful Gamble teleport, and is now unparriable(is this a word?).
Kick is now a guard break but is still the same
Determination is also a guard break but no longer sends an unparriable projectile if no speed is added to it.
External Bleeding is the same but in blood burst the move is different.
Blood burst external bleeding will no longer send a wave of projectiles and removes Hysteria. It will now instead open a horizontal wound that starts where you are, and ends depends on the distance(misrembering this since im still unsure what the slider does for external bleeding blood burst).

Meter usage supers is also affected.
Soul rush now momentum based too(Not sure)
Forceful gamble now uses old Mirror walk movement, but no longer restricts you to Double down, fold, (forgor the one other move). Instead it allows you to use your entire move set.
Checkpoint,Younocide, and blood bank are still the same(didn't test)
New super Preload is added to the pool of super. This move will remove all your momentum. After a while, you will be teleported according to where your DI is set.

This is all that I know off playing a couple of matches with new Lunatic
Also, don't know if any easter eggs has been added as i don't have the patient to guess for it.