yes it works fine for 1.3.1 the only bug i see so far is the recent news thread is add this to your extra css.
you may have to change it to
depending on your style that fixes the facebook bug not poping out like it should this fix ix credited to @Russ anymore questions feel free to ask.
i am useing xenforo 1.3.1 and porta 1.6.0 and it still does that i tested it with every browswer same result twitter and g+ works fine its only the facebook on the recent news that hides in bottom border of recent news and im at at a loss how to resolve it.
not hard read what brogan posted once you create a catagory, you can make some nodes (forums) to make subforums make child forums, also experiment with the siblings xenforo uses a great system so experiment with some things.
sounds like they are refering to custom images, which is wierd imo as long as it follows there copyright in theb signup or signin images following their trademard should be fine ino, but i could be wrong.