Serebii.net recently reported new information about Pokémon HeartGold and SoulSilver a month before the games' official English-language release. The site revealed the English names of the player characters, Rocket Executives, and more.
The player characters' English names were revealed. Hibiki is now known as Ethan and Kotone as Lyra. Please note that the name Lyra was first revealed by the official Pokémon site on their summary for the upcoming episode An Egg Scramble!.
Team Rocket Executives' English names were revealed, as well. Apollo is now known as Archer and Athena as Arianna. Lance has been renamed Proton, and Lambda is now named Petrel.