We always had a very simple, flat Plone logo. I like simple styles.
Now I recognized that the Plone logo suddenly is glossy on github/plone.
Of course it's subjective, but I don't like it. Looks very much like something from the 2000s.
That's the new Plone logo on https://github.com/plone/
That's the Plone logo on https://github.com/collective/
That's the Plone logo on https://plone.org/
By the way, I noticed the Plone logo on plone.com is fuzzy (I have set my default zoom level to 120%, though):