Designs for the new addition to Central High School in Davenport were revealed at Tuesday evening's school board meeting. Officials said the designs are not finalized, but they should give the public a better idea of what the new addition will look like. The addition includes a 1,000-seat auditorium with a new pool below it. The project is expected to be done by summer 2016 and will cost about $21 million. It is being completely funded by revenue from the state one-cent sales tax.