Nexus 6 and 8 as well as Android Silver line?

Nexus phone (6) and tablet (8) have been supposedly spotted in a bunch of code stating the words "Nexus 6" and "Nexus 8" what does everyone think the phone and tablet will be like? and who will make it? - With Google I/O 2014 approaching we might just get new news.. Also android silver, will the nexus legacy be replaced?