The Australian age recommendation system has something known as Castlevania Advance Collection listed on its website. This suggests that Konami has some sort of collection underway collecting the Castlevania games that were once released on Game Boy Advance. Games included Castlevania: Circle of the Moon, Castlevania: Harmony of Dissonance, and Castlevania: Aria of Sorrow and all of those games were really sensible games. So having the opportunity to play them again on a slightly larger screen would’ve been nice.
Konami itself didn’t confirm this collection or say anything about it.