Just went to the eShop on my eShop to download the demo for the new Fatal Frame game, and saw that the shop was decked out for Halloween. It brought a smile to my face to see a nice panel for "The Castlevania Series" next to panels with Boos, Dry Bowser, Toadette, and Dry Bones. No new games, no discounts, but a nice recap of every Castlevania game you can buy for Wii U and 3DS, which more than justifies the purchase of these systems in my opinion.
The list as it appears on the shop:
Castlevania for 3DS
Castlevania III: Dracula's Curse for 3DS
Castelvania: Aria of Sorrow
Super Castlevania IV
Castlevania
Castlevania: Circle of the Moon
Castlevania III: Dracula's Curse
Castlevania II: Simon's Quest for 3DS
Castlevania Dracula X
Castlevania: Harmony of Dissonance
Castlevania II: Simon's Quest
Castlevania: The Adventure for 3DS
Castlevania: Lords of Shadow - Mirror of Fate for 3DS
Couldn't buy any if I wanted to since I have all of these.