Vampire Survivors will hit version 1.0 on October 20th. Developer poncle announced the release date today as planned, but didn't say what new features the full release would contain so that its additions remain a surprise.
Although reaching 1.0 means leaving early access, it's also not the end of Vampire Survivors development. Work on porting the game to a new engine continues with the aim to "release it by the end of the year."