The Stoicism (Stoic Philosophy) group on Facebook already has nearly 200 members and is quite active with lots of articles, discussion, images, and even the occasional video clip. Everyone is welcome to join!
New book due out Autumn 2013, by Donald Robertson, published by Hodder as part of the popular Teach Yourself series. A practical introduction to Stoic philosophy as an ancient art of living, applied to the modern world.
Christopher Thompsett, first year undergraduate student of Classics at Exeter University, offers his view of the Live like a Stoic trial, 2012.
This is an interview I did for the New Stoa about Stoic philosophy and modern psychological therapy, etc.
This is one of the best online forums for discussion of Stoicism.