No specific info about version 4.0 beta. Please visit the main page of Smart Defrag on Software Informer.
If you have the free edition, this is a downgrade of Free SmartDefrag, to keep full option you need tu purchase, otherwise is better to go back to the old 4.0 and you have about everything.
This is such a useful tool, I am surprised it's free. Like Lit, I recommend it.
Smart Defrag 4 - I miss the Automatic Defrag screen that showed CPU usage, Disk Drive Usage & Defrag History graphs. Was useful - sorry it's gone in Version 4.