Solaris 10 update 8/07 has been released and available for download. From the announcement page:
The latest update of the Solaris OS helps customers alleviate common enterprise problems such as virtualization, resource management, and system performance. Solaris delivers built-in investment protection and new technologies that are even better suited to data intensive environments where price and performance are driving factors:
New updated features
=> Solaris Containers for Linux Applications and integrated support for Logical Domains
=> Update to the performance-optimized and cost-effective PostgreSQL open-source database software.
=> Ability to run multiple independent network stacks on one system
=> Networking and DTrace technology enhancements
Best of all, it's free to download and use. The only thing customers pay for are the support and services, which range in scope and price to suit the needs of individual developers and companies of all sizes.
Download Sun Solaris 10 UNIX CD / DVD ISO
=> Visit official site to download Solaris ISO images.