No specific info about version 1.5. Please visit the main page of Network Utility on Mac Informer.
Info updated on:
A program for monitoring your Wi-Fi network strength.
Monitor your current network traffic directly from your Menu Bar.
With Network Utility X you can quickly find all informations about your network.
OS X comes bundled with a network utility suite aptly called Network Utility.
SmartView Utility can be used to change network settings and monitor settings.