Lightweight PHP framework, Codeigniter releases 1.6. This release includes:

• A Database Forge class: database agnostic table and field manipulation
• An enhanced Active Record library
• A revised Session Class with “flash variables” and additional security
• An extendable Model Class with auto-loadable Models
• Extendable Helpers, and additions and enhancements to existing Helpers
• A revised view architecture that allows for simple inclusion of multiple views
• And over 120 different enhancements, improvements and bug fixes

http://codeigniter.com/news/codeigniter_1_6_hits_the_streets/