Omaha's CenturyLink Center beats out domes in St. Louis and San Antonio to host the 2016 Olympic Swim Trials. Exact dates are still being determined. That's likely a negotiation with NBC and potentially the NCAA. The 2016 Olympics in Rio will be held a week later than the 2012 Olympics in London, so there's less opportunity for a conflict. More than likely, it'll be the first week of July.
Omaha hosted both the 2008 and 2012 Olympic trials, setting attendance records each time. Obviously, USA Swimming wanted to stick with the proven location than try a bigger venue in another market.