You have to figure that this would be something sony may comment on if it wasnt true. If it werent true and this thing keeps gaining momentum and keeps growing sony would probably eventually have tonsay something kike "we are still working on tlg but it isnt ready to be shown at e3. We will have more information in the future." The longer this keeps going without comment from sony, the more likely i think is. I guess we'll see soon enough.
There is a similar rumor every year they never say shit.
E3 happens, it s shit, then claim tlg isnt dead but not ready.