iSlayer has announced the release of iStat pro 4, the latest release of its system monitoring widget for Mac OS X. New features of version 4 are extensive and include: Bluetooth keyboard and mouse support; Drag and drop section reordering; support for 8 cores in the CPU view; live updating for network changes, disk mounts/unmounts, Bluetooth connections/disconnections, and Intel module installer completion (as soon as it happens the widget will update); improved support for local iDisks; and more. iStat 4 pro is provided as “donationware.”