Developer Vblank has reiterated this stance on Reddit, just in case you were getting worried that the January release might not happen. Here's what they had to say, and yes, it's short and sweet:
It's still on track to be out this month.
The game has already launched on PC and PlayStation Network, and has received positive reviews. It's shaping up to be WiiWare's last hurrah, but will you be taking the plunge? Drop a comment to let us know.