FYI, the SOSLIB has been updated, taking us to revision 158. The preferred way to update is to LOG DSK0:[901,2] and then RUN SOSUPD, which uses the UpdateCenter to download just the files that have changed.

Release notes are at: soslib.html

I have not created a zip version, but other than that, you may want to read the notes associated with the prior SOSLIB 151 update (in this forum) for general information about the SOSLIB.