Well, a new Pokémon, Manaphy has been revealed in the latest issue of Corocoro. Not much is known at this time, just that it is an egg pokemon (hatched from one, not an egg type like Togepi), and is according to Corocoro, probably a water type. Other than saying its energetic and other such statements, Corocoro uses a lot of space for relatively little information.Manifi
We'll hopefully get more info on this, and here is a higher quality image.... Finally, there are three silhouettes, perhaps the preform of Manene, a pokemon that kind of reminds me of Mokoko (Flaafy), (though relation seems unlikely as that would be a fourth form), and then what looks to be a bird pokemon with some resemblence to Onisuzume (Spearow).
See the CoroCoro scan here.
UPDATE: Based on trademarks registered November 11th, 2005, it's possible that the pokemon silhouettes have the names:
Tamanta (タマンタ) - This name further suggests that, indeed the first silhouette is a pre-evolved form of Mantain (Mantine)
Buizeru (ブイゼル) - Based on the buoy in the name, and the silhouette's appearance, this could possibly be the second pokemon's name
Perappu (ペラップ) - Due to the emphasis Corocoro puts on the pokemon looking like a musical note, the Perappu name seems like a good choice, reminds me of Perappa the Rapper ;p
Finally, Manaphy has been listed in the trademark as the Romaji name, so the appropriate replacements have been made.