I am in the process of integrating the new driver into our build and noticed that the SDK libs were missing for WINCE600 in the zip file. There are files for WINCE500. Are they the same or were the WINCE600 SDK files an oversight?

The CE5 sdk.lib can and should be used on all supported OS since it is OS agnostic ( it links in no OS libraries, which would thus make the binary OS specific). Our sdk.lib is merely a set of functions consisting of the _TGTCPUFAMILY (ARM or X86) instruction set, therefore, you only need to be sure to use the X86 sdk.lib on X86 platforms and the ARM sdk.lib on ARM platforms.