CSTA has just released an excellent update on the current status of NGSS Instructional Materials Adoption as it pertains to (1) K-8 Adoption; (2) Standards Maps for High School; (3) Resources for Reviewing Instructional Materials; (4) CSTA White Paper: Priority Features of NGSS Aligned Instructional Materials- Recommendations for Publishers, Reviewers, and Educators; and (5) Williams Act and its Impact on the Science Adoption.

Very informative reading!! 

http://www.cascience.org/ngss/instructional-materials