Article in the New Pittsburgh Courier. Unfortunately the online version of the courier has not been updated for some time, but the newspaper itself is available at the Giant Eagle for 50 cents.
The article notes there will be a trimester calendar (3 semesters w/ vacations of approx one month) but does not not explain exactly how it will run. Sep/Oct/Nov w/ Dec off, then Jan/Feb/March with April off, then May/June/July w/ August off?
According to the article, students will take 3 core courses each term and 2 elective courses; if a student fails a course he/she can take it the following term in place of an elective course.
If the calendar works it is something the district would "consider for the entire district."