SMT3 had 3 releases:
Vanilla: japan only (no Dante)
Maniax: (called "Lucifer's Call" for the NA & PAL release, this features Dante)
Chronicles: japan only (replaces Dante with Raidou)
Now this HD release is based on the Chronicles version of SMT3.
Raidou is the MC from another SMT spin-off.
2 days ago JP had their 5th anniversary event and among the buch were:
5th anniversary PV
Lots of servants strenghtening.
New 5* Caster servant (now I know what I'm saving for when this arrives to NA)
More Summer Servants.
More Servants Skins
Cosmos in the Lostbelts Opening 2 (finally an...
EDIT: More details
Graphic, audio, gameplay modifiers:
Mirror on Death
Bullet Speed mode
Infinite Melee Durability
Infinite Listen mode Range
Touch of Death