I like this app but these 'big' updates make me nervous.
SmartDefrag's 'big' update added the ability to update itself AND throw in a bunch of crap like toolbars, etc. that you're only lucky to catch and stop.
Avast, which has long been a favorite of mine, has expanded browser cleaning, software updating, browser monitoring, rescue disks, etc. I don't want to knock Avast, but I have to admit I was more comfortable when all they did was anti-virus for your PC and not all this other stuff. They've also started getting a little heavy handed with the pop-ups trying to get you to try the full version or tell you you need to uodate software they have nothing to do with.
I'll download Malwarebytes new version for sure but I hope they aren't going the way of other apps.