My pleasure...

From www.opensolaris.org/os/about

"The OpenSolaris source code will find a variety of uses, including being the basis for future versions of the Solaris OS product"

From www.sun.com/software/solaris/

"Sun offers an alternative to Windows with the Solaris Enterprise System, a unified platform of Solaris 10, Java Enterprise System, developer tools, desktop infrastructure and N1 management software. Pay only for the support you need."

FAQs: www.sun.com/software/solaris/faqs/general.jsp