One nice thing included in Firefox since about version 0.9 or so (I think) is the auto-update feature where it'll pop up a little red arrow in the top-right-hand corner of your screen whenever an update comes out. I found out through that before seeing it anywhere else (though you could also chalk that up to only spending about 15 minutes on the computer every day during spring break).
What The New Version Includes: No new bells and whistles, but it does contain some important