The good and bad
The fact that patches will come out more quickly really is a two edged sword. On one hand it means that zero day exploits could become less common but on the other hand as was noted, the patch testing may become so rough that it breaks more than it fixes. Anyone who has been around Windows long enough knows the old technique of waiting until Service Pack 1 is released to avoid becoming a corporate guinea pig. I like that they are giving us some better tools for patch management but I wonder how long we'll have to drag our feet now to avoid being part of a tech article about a patch gone bad.