The launch date of Once Human is July 9, 2024.
No, at launch, Once Human only allows players to create one character per account due to technical limitations2. However, the developer, Starry Studios, aims to fix this within a month or so, allowing for multiple characters in the future.
In Once Human, character progress will be wiped at the end of each season. Different seasons will have different scenarios to play out, and a good chunk of what players own will be transferred to their personal 'Eternaland' realm. The exact duration of seasons is not mentioned, but the game's seasonal model is designed to introduce fresh journeys and exclusive content within a fixed timeframe.