At the moment, there's not much information available for Bravely Default 2, not outside of a few trailers and Square Enix interviews. However, the ACB — better known as the Australian Classification Board — recently rated the game, which means that Bravely Default 2's release date may be drawing near, or, at least, its release date will be announced soon.
For context, games usually only receive a rating when they're close to releasing, so the fact that the Australian Classification Board gave Bravely Default 2 one should mean that Square Enix has a release date in mind for it. This is by no means a confirmation, of course, but it's a trend that's worth mentioning nonetheless.
The Australian Classification Board rated the game "M," for Moderate. As most can imagine, the ACB rates things differently from the American ESRB, so both board's "M" ratings have a different meaning. ACB's Moderate rating is closer to ESRB's T for "Teen" rating, which ESRB gives to games with violence or suggestive themes.
The Australian Classification Board gave Bravely Default 2 the Moderate rating for similar reasons. It believes the violence and mature themes present in the game have a moderate impact on it, and that it has sexual content that's somewhat mild, which probably just means a few of the game's characters have somewhat revealing outfits — something fairly common in JRPGs. Beyond that, the Australian Classification Board claims Bravely 2 doesn't have any foul language, nudity, or drug use.
Hopefully, ACB's rating does mean that Bravely Default 2's release date will get announced soon. Usually, when a game gets a release date, news for it typically starts to pick up and become more frequent, and many fans of the Bravely series are looking forward to learning more about Bravely 2 after the controversy surrounding its predecessor, Bravely Second.
Where exactly this news will come from if it does happen remains a mystery, though. Square Enix already announced its line up for when it appears in the Tokyo Game Show on September 24, and there's no mention of Bravely Default 2 there. There's a Nintendo Direct happening in October, however, where Bravely can make an appearance.
In the meantime, fans can check out some of Bravely Default 2's trailers. Square Enix also released a demo for the game in the past, but any footage of it would be outdated at this point, as the publisher claimed that it would be making adjustments to the game based on fan feedback.
Bravely Default 2 is in development for Nintendo Switch.
Source: ACB