The new machine, which will be released on August 27 at a price of £299, will see Sony phase out the current 40GB model.
Sony president David Reeves told the Santa Monica crowd: "In PAL, we will introduce an 80GB PS3 on August 27. It will be a simultaneous launch across all PAL territories, and reach Russia two weeks later, due to compliance issues. It will cost 399 Euros or £299. Promotional bundles will arrive between mid-September and mid-December at various prices.
"The 40GB model will be replaced by 80GB. Don’t ask if we’re going to go down in price on 40GB - the answer is no.
"This has been planned by Kaz [Hirai] for months. There are very few 40GB models left - especially in the UK. We predict we'll be out of stock by the time we launch."