java.sun.com have a two part article covering the new web tier features in EE5.0, including the JSTL1.2 tag library and JSF 1.2, and
- Web Tier to Go With Java EE 5: Summary of New Features in Java Standard Tag Library (JSTL) 1.2</li
- Web Tier to Go With Java EE 5: Summary of New Features in JavaServer Faces 1.2 Technology
The JSTL tag lib is now a bundled feature of the EE platform so you don’t have to include the jar in your web apps anymore. The EL language has now been combined between JSTL EL and JSF EL, to form a Unified Expression Language – see the follow-on article here for more info.
Other changes include fixes and improvements for the multiple browser/conversation support, and saving of session state to the client.