CHICAGO & ATLANTA, Jun 09, 2010 (BUSINESS WIRE) –Allscripts (NASDAQ: MDRX), the leading provider of clinical software, information and connectivity solutions for physicians, and Eclipsys (NASDAQ: ECLP), a leading enterprise provider of solutions and services for hospitals and clinicians, today announced a definitive agreement to merge in an all-stock transaction valued at approximately $1.3 billion.