Trevor as far as I understand it Aries is gone
http://en.wikipedia.org/wiki/Ares_V , I might be missing a variant but I've not seen anything to suggest that it's happening anytime soon.
Short term the ISS will be serviced via the Russian program with the hope that US private contractors will be able to provide commercial launch options in a few years time (not sure of the detail there).
One of the articles I saw suggested that some of the resources which had been targetted at Aries and the Constellation program were to be used for research into better long haul propulsion (the stuff we'd need to take a human crew any serious distances).
Not sure what's spin and what's real in that but hopefully the change will help NASA put more of it's efforts into space away from near earth orbit. I'm not holding out much hope of seeing the video of a US crew standing on the moon or mars anythime soon but maybe the up side to that will be better long term prospects.
Bob