The guys from Donanimhaber managed to pull some performance figures from AMD's upcoming triple-core Llano APU that will be sold under A6-3500 name. This triple core managed 5173 marks in 3DMark06 as well as some decent figures in AIDA64 bench.
In case you missed it, the A6-3500 is quite similar to the quad-core A6-3600 except for the fact that it has one less core. It works at 2.1GHz with a 2.4GHz on Turbo, has 3MB of L2 cache and comes with Radeon HD 6530D graphics with 320 stream processors and a 433MHz GPU clock. It has support for 1866MHz DDR3 memory and a TDP of 65W.
Unfortunately, Donanimhaber didn't put the A6-3500 against any other APU, so we can only guess the performance difference but it would be quite interesting to see it in action against the A6-3650 quad-core part.
There has been some rumours that the fourth core on A6-3500 could be unlocked but we still have to see them in retail/e-tail and these rumours still have to be confirmed. The price is also unknown and the relase date is still scheduled for sometime in Q3, together with the rest of the A6-series lineup.