Konami hasn’t released a new Castlevania game since Lords of Shadow 2 in 2014 and has mainly focused on rereleases since. And a recent ratings board seems to point at that still being the case. The Australian games rating board has rated a game called Castlevania Advance Collection. While Konami hasn’t spoken about any such title, if real, it is likely a collection of the three Game Boy Advance Castlevania games: Castlevania: Circle of the Moon, Castlevania: Harmony of Dissonance, and Castlevania: Aria of Sorrow.
Twitter user Nibel tweeted out the link to the Australian ratings board that shows the unconfirmed bundle in question. It shows the game as rated M, but that’s likely a T in the ESRB as all three titles were rated T on the Game Boy Advance. For comparison, Ratchet and Clank: Rift Apart is rated an M in Australia, but an E10+ through the ESRB. The rest of the ratings page doesn’t reveal much and just says it is a multiplatform game by Konami.
Konami did put out another Castlevania bundle in 2018 with Castlevania: Requiem. It was a bare-bones port of Symphony of Night and Rondo of Blood so those expecting grand remasters should probably keep their hopes in check.
The portable Castlevania games were highly regarded in their time, having Metacritic scores of 91, 87, and 91, respectively. The three Game Boy Advance games iterated on the formula that Symphony of the Night brought to the series, which was a formula that was also brought to the Castlevania games on the DS. The DS trilogy — Dawn of Sorrow, Portrait of Ruin, and Order of Ecclesia — were also well-received, but are likely not a part of this rumored collection. But if this Game Boy Advance trilogy is real, then it’s likely just a matter of time before the DS games come out yet again.