Well, a scan of the upcoming Famitsu issue has appeared on Japanese image board featuring much clearer screenshots of Platinum until the official site releases crystal clear pics at the end of the week. These confirm a few things:
* Shaymin will automatically convert to Sky Forme when sent over to Platinum and will stay Land Forme on Diamond & Pearl
* The Torn World, positioned above the Spear Pillar, really utilises the 3D engine of the game and has the lands in a 3D isometric view * There are various other new areas positioned in Sinnoh for you to explore
Picture ish here:
http://www.serebii.net/index2.shtml