One of those trademarks got used again.
Tales of Bibliotheca was just announced for iOS and will be available sometime in the middle of this month. The app will cover scenarios of different games in the series. So far, the only announced scenario is Vesperia, which will come in 12 chapters. The first chapter is free, while the rest you'll have to buy. Buying each chapter separately will cost 170 yen, while buying them all at once will cost 1,700 yen. Official site here.
(There's new Vesperia art on the site for those interested)
Tales of Phantasia will also be going to iOS. Official site is here. There will eventually be a video, so we'll see exactly which version it's based off of.
Looks like Tales of Zestiria was trademarked in Europe.
Outside of the last two sets that didn't sound like a main Tales anyway (one of which got used for Tales of Link), it was included in the most recent trademark set filed in Japan.
Now before anyone gets too excited for an English version, things like Tales of Rebirth, Tales of Innocence, and Tales of Hearts have been trademarked in the west too and those never got released over here. If anything we should look at how Namco Bandai has been treating the series a bit better recently since we just got Graces f and Xillia and are going to get Symphonia Chronicles and Xillia 2.
Tales of Zestiria is becoming highly likely to be the name for the next Tales.