I don’t know, I’m interested in knowing this too, but it looks like SFB has a later date:
SFB Issue Date: Jul-11-2019
I assume the information in the SFB should be more accurate.
@ArthurRM & @Manel_PLM24 - I only use the matrix for a quick check for major versions. The SFB is usually updated more often. It is probably under control of 2 different people, would be my guess, and maybe it is easier to get the SFB updated?
@ArthurRM - here are the details: https://www.plm.automation.siemens.com/global/en/support/email-subscription.html
Down side is you will get a ton of emails. You'll have to start filtering out the ones you don't want, like Technomatix, etc.