The Seattle Public Schools released this update and information about the Chief Sealth renovation work to be completed this summer. Denny International Middle School will follow in the winter of 2011 and finally the New Community/Sealth Fields Open in the summer of 2011.
The dates for the Ribbon cutting and Community Celebration are included here:

Chief Sealth International High School has been undergoing a complete renovation and by the end of the summer will be ready to welcome back students and staff to the remodeled facilities for the fall 2010 school year. The 230,000-square-foot renovation, which was completed with an emphasis in energy and environmental conservation, includes renovated classrooms with technology upgrades, new foreign language classrooms, a renovated auditorium and full Americans with Disabilities Act accessibility. The gym will include new bleachers, locker rooms, ticket booth, concession stand and refurbished wood floor.
The new Galleria/Commons will be co-located on one campus with the new Denny International Middle School and will include separate dining facilities, a new health center, student services, student activity spaces and large display areas.
All students, families and community members are invited to help celebrate the opening of the school at these upcoming events:

Ribbon-Cutting Ceremony
Tuesday, September 7
9:30 a.m.
2600 S.W. Thistle St.
At school's main entrance

All Community Celebration
Saturday, September 25
10 a.m.
2600 S.W. Thistle St.
Tours of renovated classrooms and gymnasium