APEX 4.0 comes with tons of new Features, a good summary can be found in the New Feature Description Application.

Every time I try something in APEX 4.0 i find some cool new functions or features, for the moment my favourites are:

• Plugins, Plugins, Plugins
• new Debug Mode
• Tree View in Application Builder

Check APEX out now and find your cant-live-without-it-features!