The phrase "new quests" means new adventures or challenges. It refers to trying new things or pursuing different goals in order to discover, learn, or achieve something new. Full definition
However, it is the thirty hours of new adventures tied in with the amount of new quests and point of interests that will get players back into the game. (metacritic.com)
This in - game campaign event will reward players with login bonuses, special characters, and new quests for players to take on. (thatvideogameblog.com)
The Blood and Wine expansion will feature over 90 new quests in a 30 + hour adventure. (wccftech.com)