Malwarebytes has released version 4.0 of their flagship antivirus product. With it comes a new scanning engine, a new user interface, threat statistics and more. With the new interface users can now easily manage the different protections, but also see stats on the malicious sites, ransomware, or malware and malware and PUPs that Malwaerbytes has prevented. For users running Windows XP or Windows Vista, the new version will no longer work on those operating systems. If you wish to upgrade to this new version you will need to download the installer directly from the Malwarebyte site.
Source: https://www.bleepingcomputer.com/news/software/malwarebytes-40-released-with-new-ui-and-scanning-engine/