The latest issue of Japanese magazine CoroCoro reveals more details about the forthcoming Pokémon Gold & Silver remakes. Pokémon Heart Gold/Soul Silver are due in Japan on 12 September and will come with a special PokéWalker accessory which tracks your steps and improves your Pokémon's experience.
The magazine reveals that you may be rewarded with items when two PokeWalkers are connected via infrared and it will log your daily activities and updates your PokéGear when you connect to Heart Gold/Soul Silver. The PokéGear has a phone, map, radio and item finder.
As for the Pokémon themselves, we are told that Entei, Suicine and Raikou will be at Level 40 and that the Notched-Ear Pichu will be unlocked when you trade your Pikachu coloured Pichu. The Notched-Ear Pichu knows Pain, Split Volt Tackle, Helping hand and Swagger but it can't evolve or be traded to another game. Red Gyrados can be found at the Lake Of Rage where it is raining.