We want to provide you a detailed look at a new feature coming soon to Pokémon GO - Daily bonuses! Trainers will soon be able to receive a bonus for certain daily activities, including catching a Pokémon or visiting a PokéStop once a day. You’ll earn a larger bonus if you do this seven days in a row! - Pokémon GO Blog
This seems like a nice idea for continuing players, but most people have stopped playing now. So is this there idea to try and attract people back to the game?
Read the blog post for the exact details on the bonuses.