Warner Brothers have optioned the film rights to Tad Williams' Otherland sequence of SF novels. John Scott III is writing the script (he's also adapting Isaac Asimov's Caves of Steel for 20th Century Fox).
From the sound of the press release, the film producers are not planning a faithful adaptation, but will instead compress the 3,300-page story (in paperback) into a single two-hour movie. Expect about 5% of the plot from the books to end up on the screen.
An odd choice, it has to be said. Given Otherland's episodic nature, a 3-4 season TV adaptation is a much more logical way of adapting the series. Whilst the film may be entertaining, it will certainly not be a faithful adaptation of the books.
In the meantime, a free-to-play Otherland MMORPG will be released later this year by DTP Entertainment.