The AP course Computer Science: Principles (Computational Thinking Practices), according to the College Board, will not be ready for implementation until 2016. However, you can either view the complete PDF which covers all of the course content, or you can view the Word document which summarizes the learning objectives/outcomes, key concepts, etc. copied and pasted from the PDF in 3.5 pages.
Currently, it is being tested and worked on with educator groups, students, etc. The pdf was last updated in August of 2011. There are five test sites all over the country that are pilot teaching the course. The project is funded by the National Science Foundation. For a complete overview of the project, progress, etc. you can visit the College Board site here.