Teehan+Lax has put together iPhone GUI PSD and Palm Pre GUI PSD to help designers pitch and develop polished concepts using a tool their pretty familiar with, Photoshop. The elements are built with vectors for easy editing and scaling.
In the latest update version, Some of the changes and additions in the 3.0 iPhone GUI PSD include:
• Map and map elements including curl
• Copy and paste elements
• Timeline bar editor
• Horizontal iPhone
• Horizontal Panels bars and keyboards
The updated PSDs require CS4 and their corresponding font.
Enjoy to download 
iPhone GUI PSD: http://www.teehanlax.com/blog/2009/06/18/iphone-gui-psd-30/
Palm Pre GUI PSD: http://www.teehanlax.com/blog/2009/07/08/palm-pre-gui-psd/
Nice. Now that Apple has announced the launch of the iPad App Store opening looks like we’ll be needing the iPad version. I’ve got one for you right here: iPad GUI kit in PSD format
Antonio Dev´s last blog ..iPad GUI Kit
Thanks guys