Salesforce has changed the behaviour of the Type.forName Method. Using an invalid namespace while calling the Type.forName() method now returns null. Previously, Apex allowed you to specify an invalid namespace such as Type.forName('InvalidNamespace', 'OuterClass.InnerClass') or use an outer class as a namespace such as Type.forName('OuterClass', 'InnerClass') with indeterminate results.

Decreased operational efficiency, increased potential for human error, delayed time-to-market, and decreased employee satisfaction.