As is the odd and indeed curious wont of filmmakers, you can't have just one film with a kinda maybe similar theme at once; more often than seems explainable, you get a glut.
So while one waits for any more news of the film of The Time Traveler's Wife - no poster, no trailer, no website, no-show at the Toronto Film Festival as had been anticipated, a release date for the US that has vanished from the imdb page linked above, but with so little publicity, one has doubts that its release is anytime soon... and there's no sign of an Australian release date. Sometime in 2009?
There's The Curious Case of Benjamin Button , based on a short story by F. Scott Fitzgerald. Also involving (literary) time travel. No poster, but there's an official website , and a new non-teaser trailer. Film starts in Australia on Boxing Day.