Back in July we had MediaTek announce it has developed a true octa-core mobile chipset, one where all eight cores can work in tandem. Samsung's Exynos 5 Octa has eight cores, too, but they are in a big.LITTLE configuration of four powerful Cortex-A15 cores and four frugal Cortex-A7, so the devices mix and match between the two sets, but never fire up all eight at once, due to overheating concerns that might require a change in the 5 Octa design to be tested and avoided.
Yesterday MediaTek confirmed for local media that its MT6592 chip with eight cores is ready for prime time, and the release date is pegged for November 20th. Granted, MediaTek is producing low cost, entry level chips that find their way into more affordable devices, but a true octa-core one deserves some bragging rights, no matter how useful this achievement actually is.
Those eight cores don't mean something ultra powerful, though, as they are all lowly Cortex-A7 ones, that's why MediaTek has no worries about overheating, and the AnTuTu score around the 25 000 mark show that we can't expect much more performance from those compared to existing chips, but the octa-core tag on your phone's specs might compensate for that.