During his routine investigation of Maps app, Cody found some interesting bits in the file altitude_manifest.xml. In this XML file, there is a reference to a set of Intel based graphics chipsets for which certain features like Shading are disabled.
Cody says that older Intel chipsets are known to not support shading very well, and that's probably why Apple wants to disable that feature on these Macs or will be software rendered. It is interesting to note that there is no reference to ATI Radeon chipsets in the list above. Though we don't know the exact reason, it is probably because they are proper graphics cards that can support shaders.
It's suggested that there is no other reason for Apple to have references to Intel chipsets in their Maps application unless they are thinking of bringing the app to OS X.
Read More [via 9to5Mac]