It is no surprise that the new Standards include collaboration. I counted over a dozen uses of the term in a recent article on the Standards in the January 2012 issue of College and Research Libraries News.
Standards for libraries in higher education: Approved by the ACRL Board of Directors, October 2011, College and Research Libraries News, January 2012 73:34-48
Performance Indicator 3.1 Library personnel collaborate with faculty and others regarding ways to incorporate library collections and services into effective education experiences for students.
Performance Indicator 3.2 Library personnel collaborate with faculty to embed information literacy learning outcomes into curricula, courses, and assignments.
Performance Indicator 3.5 Library personnel collaborate with campus partners to provide opportunities for faculty professional development.