Do I need to explain to you why this means nothing? Although that would really show just how blind you are.
The card launched 5th of November, not before. You're just digging holes. Yet you say I'm determined.
You are wrong, that is all that's important.
When the card was put on the shelves is irrelevant, its when the BIOS was build that matters, the BIOS is not built the day it goes on sale.
TPU is full of BIOS builds that date before you say they are released.
A 15.049 BIOS cannot date from October 24'th 2013, TPU's BIOS data base proves that, this is the last BIOS http://www.techpowerup.com/vgabios/168095/powercolor-r9290-4096-150104.html
15.048 it dates from 02/02/15.
The 390X sceenshot here can only be a fake.