Here's an interesting bit of news from California that's worth keeping an eye on:
California passes bills to create open-source digital library for college textbooks
California Passes Nation’s First Open Source Textbook Legislation
According to the Sacramento Observer, Bill SB 1052 "provides for the selection, development and administration of the free open digital textbooks for the most popular lower-division courses overseen by the establishment of the California Open Education Resources Council (COERC)." These textbooks will be open access and open source, with a creative commons license allowing for reuse.