According to the listing, the Castlevania: Requiem bundle will include seminal PSOne classic Castlevania: Symphony of the Night and the SNES outing Castlevania: Rondo of Blood. It's also likely coming to the US and UK, as the listing mentions an English Language release.
Right now we have no idea when the collection will be released, and likewise it's unknown if the games will be remastered or just straight ports.
Castlevania has been keeping a low profile over the past few years since the release of Castlevania: Lords of Shadow 2, although Konami hasn't really done much with any of its major franchises lately to be fair.
Hopefully we'll get an official confirmation regarding Castlevania: Requiem soon, although for now take this with a pinch of salt just in case. Still, this sort of thing is usually on the money.
The question is, will Symphony of the Night be included in the newly-unveiled PlayStation Classic?