According to interviews Batista did last month in the UK, he has roughly a year left on his contract and is thinking about retiring when the deal expires. With Batista's latest injury, it's worth noting that WWE can add on any time that he spends away from the ring to his contract to make up for lost time. WWE contracts give the company the right to tack on the amount of time a wrestler misses due to injury to the end of their deals. Batista is expected to miss four months due to the bicep surgery he's having today, so WWE can legally add four months to his contract.
So if Batista is out for the full four months, and WWE opts to tack that time on to his contract, this would place his deal expiration around time for SummerSlam 2010.
We have a thread going on our forums about who should be the next WWE Champion with Batista being out. Click here to go directly to that thread and share your thoughts on whom you would like to see as the next WWE Champion.