That's great news and bad news all in one downloadable package.
Is that really a big deal? Paying voice actors and sound FX people to record 2 minutes of (virtually irrelevant) dialogue, then paying professional programers to hack the new audio into the game along with new subtitles for the intro would octuple the cost of releasing it...seems like a waste of time and money to me. This game has been fully entertaining all but the most xenophobic of Castlevania fans just fine for the better part of two decades.
But, that's the thing, they already did that on the Dracula X Chronicles, so, it's already been paid for & hacked & whatever, atleast, on the PSP version. Doesn't seem like a huge leap to include that in the VC version, but, I'm no coder, maybe there'd still be more coding involved. But, even still, Vic Ireland/Sunsoft is talking about possibly redubbing the Valis games! So, if they're even considering that, it must not be too hard nor expensive, & that's just with Valis. Rondo of Blood is a much higher priority game then the Valis games.