Almost every aspect of iStat Menus has been enhanced.
iStat Menus 3 includes a large number of enhancements and fixes, as well as a completely new preferences user interface and streamlined installation.
The battery extra is brand new to version 3, showing an incredible amount of detail, two configureable low battery warnings and menubar information that’s customizable for each power state. It also monitors Bluetooth keyboards and mice, plus uninterruptible power supplies (UPSs). It is far, far more customisable than the standard OS X extra.
The Sensors extra now includes the ability to change the fan speed on Intel-based Macs as well as new display modes and support for the latest Macs.
The Date & Time extra has been updated to include moon phase information, fuzzy clock and sun and moon rise/set times for each of the 20,000+ included cities in the world clock section. It is the most powerful menubar clock available for OS X.
Support for the newest Macs has been added to the network extra, along with public IP address display and improved support for PPP connections.
iStat Menus is an incredibly capable and flexible utility, full of many different display modes, customizable colours, font sizes and widths.