How can I figure out which u-boot commit is included in a specific Apalis TK1 Linux Image (BSP) version?

Where can I find the information about the mapping the Linux Image v2.7b1+ and the u-boot version used in that image? (In the Release Notes for the Apalis TK1 Linux Images are just entries till V2.6.1 Beta 2.)

You can trace back over the tags applied in https://git.toradex.com/cgit/u-boot-toradex.git/log/?h=2016.11-toradex for specific branches.

If one could read one would notice the following noted towards the top of mentioned release note text file:

==> For newer images find the release details in the Toradex developer article:
http://developer.toradex.com/software/linux/linux-software/release-details

Yes, or one could just use the git client consulting its documentation for further help.