Bitdefender Rootkit Tools (old And New) Information

What is the similarities and differences between the old "BitDefender Rootkit Uncover Tool (i know that it was in beta stage)" and the new "Bitdefender Rootkit Remover"? Is there is anything like scanning technique, scan target etc in common in both? Because both take very less time to complete the scan.

This post is just for getting information about the esteemed products/tools your company. :)