Rob Officially Confirmed for 'Water for Elephants'?

First, EW reported in it's latest issue, article "Life After Twilight":

"The 23-year-old recently signed on to star opposite Reese Witherspoon in Fox 2000's adaptation of Water for Elephants, a film the studio is hoping to get into production before Pattinson takes off for Breaking Dawn.

Now, both Rob's and Water for Elephants' IMDB pages have him listed as in the cast. 
via Source