Geniatech uses the AmLogic AML8726-MX Dual-core ARM Cortex-A9 SoC in their new HDMI stick solution, first with support for USB DVB-T tuner. You will be able to buy it for $99 with free (standard) worldwide shipping as a sample in the ARMdevices Members Store: http://armdevices.net/members-store/ (I just need to set it up within the next couple or three of days). Here's Geniatech's press release on the availability of their new ATV120 dual-core HDMI Stick: http://www.geniatech.com/news/dual-core-hdmi-stick-atv120.asp
U-Force shows a range of impressive and cool MediaTek MT6577 dual-core based smartphones and tablets, the price difference is only $3 to get the dual-core MT6577 over the single-core MT6575. They also show some phones with the new MT6515 2G phone.