Champaign Unit 4 Schools has released some information about the potential site builds for Central, Centennial, Edison, and some others.
Per the press release:
Champaign Unit 4 School District has made updated school site plans under consideration available for public viewing and feedback on its planning website. The plans have been prepared as a result of the recommendations of the Tier II Committee for Facility Planning, which included representatives from a variety of stakeholder groups.Cost estimates are provided for each option. Videos have also been created to demonstrate process that might be undertaken to renovate, modernize, and expand the high school facilities at their current locations.The District and Board of Education also invites members of the community to attend the second of two Town Hall Meetings on Thursday, July 14, 2016 at Centennial High School at 6 p.m.
There are several mock ups and slide shows available at the construction page, and some videos posted that I've embedded below for you to take a look at.