Can someone explain me why they chose Caffe2 as the name? I think this is a problem for Caffe, as people would see Caffe2 as the newest version of the library,

Can someone explain me why they chose Caffe2 as the name? I think this is a problem for Caffe, as people would see Caffe2 as the newest version of the library, when they are not related (aren't they?) I would have preferred them to chose another name.