Well, given current A8's with 1866 perform nearly as well or better than a 5570 depending on whether you OC, increase the iGPU RAM, or such, and Trinity is supposed to naively support 2133mhz RAM, and a 30% increase to performance, and it is Cayman / Radeon 6900-series architecture on 32nm, it may quite possibly outperform a 5670 given you use the 2133 RAM.
Also the Piledriver cores in Trinity are supposed to; have fixed the L1 cache issues, Cache latency issues, increased IPC by 10-15%, and reduce power consumption over BD1. Or so it is supposed to. Lets hope.
And should the above release with a 3.8-3.9ghz flagship model, possibly with unlocked multiplier, and releases for $130-180 retail, then I must say I will not only buy it for myself, but be praising AMD for making a comeback.
If not I will go buy myself a slightly older 3870k or get an AM3+ board and a nice old warehouse Phenom X4 if there are some left still. Otherwise I might have to buy Intel.