[Update] Castlevania: Symphony of the Night and Rondo of Blood rated for PS4
Yet another ratings board leak reveals the existence of an upcoming game. Konami appears to have something up their sleeves called Castlevania Requiem, which according to the Korean Ratings Board listing, is a collection of Castlevania: Symphony of the Night and Rondo of Blood. There's currently not much more information to go by, pertaining to this re-pack being a remaster or simple port. Regardless, it's been rated for release on the PlayStation 4. Both an English and Japanese version were found on the page, meaning a western release is all but guaranteed when the game gets an official announcement. Castlevania: Rondo of Blood originally released in 1993 for the PC-Engine, and featured the protagonist Richter Belmont, who was previously revealed to be in Super Smash Bros. Ultimate. Symphony of the Night was released in 1997 for the PlayStation 1, where it would go on to inspire a multitude of games to come. Both titles have been repacked before, in the PSP's Dracula X Chronicles.
Source
Update: The ESRB has also rated this game on September 24th with the title of "Castlevania Requiem: Symphony of the Night & Rondo of Blood" and gives it the following description.
Rating Summary: This is collection of two action platformers in which players assume the role of a vampire hunter battling Dracula and other creatures. From a side-scrolling perspective, players traverse Dracula's castle to kill fantastical enemies (e.g., zombies, demons, minotaurs). Characters use whips, swords, axes, and magic to defeat enemies. Pixelated blood is depicted when players' character and creatures are killed; some attacks result in decapitation and dismemberment of creatures, including a boss character that loses its body parts and entrails.
Konami has made no official announcement at this time.