So far I only have the 16x16 and 64x64 Terrain Templates, eventually I'll have the other two up, as well as Photoshop actions for tearing apart the files that others make, allowing you to quickly and easily mix and match texture packs on all platforms. These ARE PSD files, and the actions will be for Photoshop, of course.
Terrain:
16: http://www.zumodrive.com/share/aTu9OTA4NT
32: (Coming Soon)
64: http://www.zumodrive.com/share/aTu7YzY2OD
128: (Coming Soon)
Character Skin:
16: (Coming Soon)
32: (Coming Soon)
64: (Coming Soon)
128: (Coming Soon)
Weapons/Tools/Items:
16: (Coming Soon)
32: (Coming Soon)
64: (Coming Soon)
128: (Coming Soon)
Actions:(Coming Soon)
I'm also working on a texture pack of my own, 64 x 64. Here's a pic of the Wood Planks: