Not true, I'm sure it's a fake.
Even though it's a prototype I don't think they would write the name of the core on the die (Palomino), Athlons aren't even supposed to get to 3000+, the closest ones would be based on the 0.13 Thoroughbreed core that's not out yet.
And why would it have a blue packaging? They've used green and brown so far, why would they want to color it blue as it can never be seen anyway.