I hope its the production increase kicking in already, but this has happened in past months too. I think availability has even been in the 20%s a few times this year.
"[Our former customers] are unable to find software which they WANT to play."
"The way to solve this problem lies in how to communicate what kind of games [they CAN play]."
Satoru Iwata, Nintendo President. Only slightly paraphrased.