Nope the supplied file (a 7-zip archive) contains a file named "zImage-power48-ubootMod"
This is a zImage file ready to flash if it will be renamed as vmlinuz-2.6.28.10-power48

My file is only zImage Power Kernel v48 + u-boot (Matan's version) modded to search boot.scr on mmc's first partition instead of third partition.

This kernel image was created before Pali released his version which is better because it uses newer version of u-boot:

Here the Pali's U-Boot zImage (with power kernel v48) : http://atrey.karlin.mff.cuni.cz/~pali/u-boot+kp48.bin