FYI, I just posted another minor update of the SOSLIB, now version 122. Here are the Release Notes

To update, just LOG 901,2 and either enter "SOSUPD" when it prompts you, or "RUN SOSUPD" from the dot prompt.

Note that the Update Center is still only available under Windows, so to update the SOSLIB for other platforms, first update a Windows workstation and then FTP from there to the platform of your choice.