You know how Taiko no Tatsujin Plus is on the iTunes Store, and that Taiko no Tatsujin Shinkyoku Tori Houdai is for Android devices (with whatever Japan-exclusive mobile content service that houses it)? So when you combine the two you get an Android app that will be available on Google Play! Perfect logic!
No, but seriously, this new smartphone app version of Taiko no Tatsujin will be hitting Google Play shelves soon, and that means there is finally a chance for the remaining 45% of the populus to get it (just short of whatever way you need to bypass possible region lock). The main site for the Android game is hosted at http://app.taiko-ch.net/, whose URL is really similar to the usual iOS version main site at http://app.taiko-m.com/.
On the gameplay... well it is your average Taiko no Tatsujin game, so what else would you expect (tap virtual drum like Plus or Wii U)? The Fukubiki system and the prospect of collaboration is inherited from Taiko Plus all well, with Kumatomo and Tales of Asteria shown on the teaser site.
And to prepare for the upcoming release, you can pre-register for the release here, only needing your e-mail address or Twitter account. which when it exceeds 10,000 and 50,000 pre-registration nets everyone themes and Don-chan outfits that feature the Android green robot dude (that is of course exclusive to GPlay version and not on iOS).
