Furthermore, if you guys noticed there was also a tease for Senran Kagura: Shinovi Versus in the post holiday card above. If you don't see it look closely to the silhouettes in the holiday card.
Here is the second tease tweeted by XSEED:
Putting the first letters of this tweet together and you get Electric town. Which is a common name for Tokyo's Akihabara neighbourhood. This can't be coincidence since Akihabira is the setting of Akiba's Strip 2.
As a Vita owner i'm looking forward for the official announcement of Akiba's Trip 2. I'm looking forward to this game since it was announced but the language barrier hold me off.
Source: NEOGAF and Gematsu