MojoKid writes: The story around AMD's upcoming Kaveri continues to evolve, but it's increasingly clear that AMD's 3rd generation APU won't be available for retail purchase this year. If you recall, AMD initially promised that Kaveri would be available during 2013 and even published roadmaps earlier in May that show the chip shipping in the beginning of the fourth quarter. What the company is saying now is that while Kaveri will ship to manufacturers in late 2013, it won't actually hit shelves until 2014. The reason Kaveri was late taping out, according to sources, was that AMD kept the chip back to put some additional polish on its performance. Unlike Piledriver, which we knew would be a minor tweak to the core Bulldozer architecture, Steamroller, Kaveri's core architecture, is the first serious overhaul to that hardware. That means it's AMD's first chance to really fix things. Piledriver delivered improved clock speeds and power consumption, but CPU efficiency barely budged compared to 'Dozer. Steamroller needs to deliver on that front.