When DMC was created, even Capcom acknowledged that it was "CastleVania in 3D" for the most part. Konami now faces the fact, that it has been done. It was done by Capcom. Konami missed their golden chance to take CastleVania 3D , when they put the craptacular ones out on the N64.
And come on. Konami knows people want Castlevania 2D. The three GBA games have been top sellers , game of the months for magazines, game of the year for the GBA and have been praised by the gamers. They also know that Castlevania: SOTN is thought to be one of the all time best games ever and was the pinnacle of 32-Bit gaming and the PSone games. There is no reason for them to ignore the fact the gamers and critics want a 2D Castlevania installment on their home systems.