Update #2 (11:30 PM): Added a new scan of Jirachi. Read the fourth paragraph for info.
Update: Added a new scan showing Arceus in the games and info related to it. Check the third paragraph.
New scans from July’s issue of CoroCoro have surfaced on Japanese image boards. More scans should be coming in today or possibly later in the week. According to Heerosferret, the first scan featuring the silhouettes of Kyogre, Groudon, and Rayquaza states that once you defeat the Elite Four in HeartGold, Kyogre will appear in the wild, whereas when you defeat them in SoulSilver, Groudon will appear. When both legendaries are brought together in the same game, Rayquaza can be encountered as well.
The second scan just shows off Professor Elm’s lab, depicts Silver holding a Great Ball, and shows a Team Rocket grunt. Nothing new is revealed from what we can tell. The third scan featuring Cynthia states, “Witness the birth of Arceus and Legendary Pokemon,” though we have no idea if she is referring to Platinum‘s Arceus legend, these two remakes, the 12th movie, or what.
The fourth scan, which shows Arceus and Cynthia together in HeartGold and SoulSilver, features someone saying that they were “given the right to choose one life out of three.”
It is unclear if Cynthia or Arceus is speaking the line or who the line is referring to. It could be in reference to Dialga, Palkia, and Giratina, as there are three symbols on the floor and Arceus rules over those Pokemon. This scene is most likely a hidden event, as it would be hard to imagine Arceus or Cynthia appearing in the timeline of the second generation. Perhaps if you trade the Japanese movie Arceus to the two games, you will unlock an event where you can capture one of the Dragon Trio, thus “saving” them. This is just speculation of course.
A new scan of Jirachi has surfaced. The scan is way too blurry to read, but posters on 2ch who have CoroCoro are providing summaries of the info. How accurate their posts are we do not know – we will probably have to wait a few more days for clearer scans to determine their validity. However, they state that a Jirachi download is going to take place in June. The new WiiWare game Melee! Pokemon Scramble! appears on the bottom of the page and is coming out in a few days, so perhaps Jirachi is a present that you can download with the game. When you trade the Jirachi to HeartGold and SoulSilver, it will unlock a new area called “Edge of the Night Sky.”