They announced Operation Abyss in December last year, so I don't think they'll necessarily hold everything for February.
That said, it's bizarre that they've gone so long without announcing anything. They normally tend to fill out the first few months of the year with releases:
2013, Feb - Apr = 3 games, 1 app
2014, Feb - Apr = 3 games
2015, Feb - Apr = 3 games
So far, we've got 1 game announced for March. Anything announced in February I'm assuming won't be released any time immediately afterwards, judging by how they normally trickle trailers out.
And aside from that, what have they been working on since their previous localization efforts were completed? The translation for Witch & Hundred Knight is already complete, judging by the Japanese release, so there's not even any work to be done on that.