"Sun Microsystems Inc. is making its Solaris operating system source
code publicly available to developers under its "community-source
license" program in a move apparently aimed at mimicking the
success of Linux."
"Under the Sun program, developers and users can download Solaris
source code for free and make changes to the operating system so
long as all the changes are reported back to Sun. But developers will
still have to pay license fees to Sun if they decide to use any Solaris
code in commercial products."
"This means that most users are unlikely to see any immediate
changes in the way they acquire or pay for Solaris products."