Penguin Classics USA has scheduled the release of Apollonius' "Jason and the Argonauts" (translated by Aaron Poochigian) for early January 2013.
Here's a taste and a link to an excerpt on the NEA website:
Jason on the Field of Ares
Soon as his shipmates bound the hawsers, Jason
vaulted ashore and swaggered to the lists,
on one arm shield and spear, and in the other