I think the Vita might finally be starting to take off in Japan. There is no reason for this (no Christmas season) and no new games this week, but sales went up again by over 10k.
http://www.playstationlifestyle.net/2014/01/08/japanese-sales-charts-final-fantasy-xx-2-hd-remaster-drops-hard-ps-vita-beats-wii-u/
Said week of Dec 30-Jan 5 sold 88k units. That is up from a high of 75k last week. Note that nothing new came out this week and sales of FFXHD went way down. This while the 3DS dropped 20k or so units. Looking at the hardware charts on VGChartz also shows something different is going on in Japan as no such previous bump is seen at this time of year last year. Has the Vita finally obtained critical mass with good games? Are people buying it up in anticipation of the PS4 release?







