If you're a spoiler hound like me, here is a link to a page with plenty of links to Season 6 spoilers and speculation.

Needless to say, SPOILER ALERT!
Link: Click me

It's a page from the Supernatural Wiki. Which is an excellent place to look up stuff about the show if you're a nerd about it, like me. xD Also, there is a Supernatural anime coming out. Check the Wiki for more details. =3