The next Sea Islands GPU should arrive in the beginning of the year as AMD struggles to bring in enough revenue to remain competitive.  We don't know the exact specs, though there were some leaked a while ago that you can speculate from, nor is it clear if AMD will lead the new series with the high end or midrange so you don't have to hold off on asking for that new GPU for Christmas.  Of course this means that NVIDIA will be immediately be countering this move and you can expect to see new Kepler based cards around the same time.  Pricing will likely be an interesting battleground, as AMD's last cards came out at a price which in hindsight was too high so we will have to wait to see if NVIDIA will attempt to undercut AMD's pricing again.  AMD did not refute the news that DigiTimes posted, so you can be pretty sure they are on the mark with the date.

"AMD reportedly plans to release its Radeon HD 8000 series GPUs in the second quarter of 2013 as the company is currently going through a business reorganization to aid its poor performance in the third quarter, according to sources from the upstream supply chain.

AMD originally planned to release the GPU series at the end of the fourth quarter to compete against Nvidia's products."

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