3DS Circle Pad attachment officially titled “slider pad”?

Is the 3DS Circle Pad attachment officially called the “slider pad”? That seems to be the case, as Nintendo of Europe provided that name in the Resident Evil: Revelations launch date announcement.

Here’s the relevant information from the press release:

“The game is also compatible with the new slider pad, a second circle pad with two more shoulder buttons, enabling you to interact with the environments in new ways.”