Hey there, Ryan659 here…Just filling in for WhoKnows_WhoCares for this post.
There’s been a whole mound of information been released recently on Heart Gold and Soul Silver, due to the upcoming release of the game. These are listed below.
First off, Suicune, one of the trio of legendary dogs of the region, is caught a little differently to the others. Where the other two are found by regularly checking the map to see where they are, Suicune will stay in a region until you meet it, then flee to another region. After a few regions it then stays in one region, without fleeing at all, giving you a proper chance for a battle. Second, Groudon and Kyogre (depending on version) can be found by being given a Red/Blue Orb (depending on version) by a man on Route 27 after obtaining the National Dex, then seen in a cave west of Cianwood City, with Rayquaza needing both Groudon and Kyogre as already revealed, along with a Green Orb from the same man and being found in the same cave.
Also, there is a large amount of starter Pokémon being given in this game. To start with, you get the original Johto selection, however after collecting all 16 badges and talking to Oak, he will give you the choice of choosing from the Kanto starters. Then, after Red is defeated in Silver Cave (who now has a slightly different team to the original games), a man in Silph Co. in Saffron City will offer you the choice from any of the Hoenn starters.
Along with this, Pal Park is in this game, also. The original site for the Safari Zone in Fuchsia City that was, in the original games, closed, is now the new Pal Park. No other information has been revealed about this area as of yet. Also, trading with Diamond, Pearl and Platinum versions is available from this game from the very start, as soon as trading is possible.
More news comes as it is made.