So i take it this is the updated version of the HD 7970? at least judging by the specs. None the less this product could be very interesting if its 384bit and priced right.

How on Earth did you draw such a conclusion? 7970 was a first generation GCN 1.0, Tahiti, GPU. This very article is talking about Tonga, which was the first third generation GCN 1.2 GPU and appeared in the somewhat awkward 285 and then later in 380. According to the article, now it's finally the full Tonga chip, thus displaying more stream processors than 285/380. The other GPU based on GCN 1.2 is Fiji.

I think be means the fully enabled one with 2048 shaders and the full memory interface, rather than the cut down 256 bit one, hence basically being a 7970 with the updated features and hopefully 6 GB of VRAM

Quite similiar though : 280X/2048sp/3GB/384bit - 380X/2048sp/3GB/384bit. There is also 280X with 6GB Vram.

I think be means the fully enabled one with 2048 shaders and the full memory interface, rather than the cut down 256 bit one, hence basically being a 7970 with the updated features and hopefully 6 GB of VRAM

The card wouldn't be powerful enough to use all 6gb just like the 280X was not powerful enough to use 6gb.

If the speculations are true and the choices are 3 and 6GB, I'd still want 6GB. The card will definitely be strong enough to handle 4GB, which is so often called the wise amount (like in every Guru3D review of late). 3GB would fall 1 short, even if 6GB wasted 2.