Any noteworthy changes in the last couple years?

[Genuine]

I'm coming back to PFS after a few years away. Last time I played faction cards were a brand new thing and I was gonna have to scrap my plans to build a Magus with some Swashbuckler arcana.

Obviously I've grabbed the newest PFS guild guide and re-examine the additional resources, but is there anything worth taking special notice of?

[Nefreet]

Welcome back!

Plenty of documents to peruse:

The Story So Far
Faction Journal Cards
Guide to Organized Play
Campaign Clarifications
Additional Resources
Pathfinder Society FAQ

And, of course, you can search this forum for any other questions.

[Majuba]

No more tieflings and aasimars. Seasons are significantly more plot-driven as a whole.