No specific info about version 2.3 beta. Please visit the main page of USB-AV on Software Informer.
the best antivirus usb
Prevent virus infection from USB drives and other external media.
A small utility that scans for threats in USB drives
Data in a USB Flash Drive is protected by a password.Useful Security Tool.
USB protocol capturing,decoding,displaying,filtering, error detecting and more.
Protect your system from malware attacks over USB Storage devices.
BitDefender USB Immunizer can help you deter autorun USB viruses.
the best antivirus usb