Bandai Namco has trademarked something called 'Tales of Arise Beyond the Dawn' in European territories, as per a fresh page on the European Union Intellectual Property Office's website. The trademark doesn't give us much information beyond the title, but everyone's already thinking the same things: is Tales of Arise getting an expansion? Maybe even a sequel?
It's impossible to say for sure at this point in time, but it's worth noting that the Japanese publisher previously went on record saying that it had no plans to make story DLC for Tales of Arise, and that the game is a standalone experience. In other words, it wouldn't pave the way for a sequel.
As such, we wouldn't get your hopes up for a continuation just yet. It's possible that Beyond the Dawn is a new version of the existing game, like a complete edition, or a port to a new system. That said, 'Beyond the Dawn' is a name that raises eyebrows — it certainly sounds like some kind of post-credits adventure.