That new game has been trademarked as “Ninja Voltage” in Europe. However it is uncertain whether or not it will be a Naruto game or a Boruto game. Judging from the content we already have to work with, it can be inferred that it is indeed too early to have a Boruto only game, because there has only been one arc of Boruto completed.
However there is the thought and idea of the Naruto Storm series being the original old school generation’s game, and “Voltage” being the next generation’s game that will be Boruto’s legacy in the video game industry. Even though this is just a theory, it can be interrupted as such.
And even though Naruto to Boruto: Shinobi Striker was recently trademarked and has shown gameplay earlier this year, there may be a couple months before we even get to see gameplay just because the trademarked was just filed through Bandai Namco Entertainment.
There is no further information apart from the trademark, so when there is we will update you all when the time comes from the anonymous developers behind this new Naruto/Boruto game. Specifics on it being a Naruto or Boruto game or maybe even both are still unknown, but the fact that it is going to be published through Bandai Namco and it is a Ninja game infers that it will be a Naruto related game.