I've seen the DC version on amazon.co.uk, due out October 4th.
http://www.amazon.co.uk/exec/obidos/...691318-4213433
So region 1 can't be far behind.
Don't know about the extras, but from what I gather the directors cut is "merely" the deleted scenes cut back in, and more expensive visual effects added. Not seen it myself, but I don't double dip on DVD's, EVER.