A new unreleased Acer Iconia A1-840 was discovered on GFXbench, a benchmark website. Its specifications include 7.9 inches, 1280×800 pixel resolution, 1 gigabytes of RAM, 16 GB of flash storage, a 5 megapixel camera on the back and a 2 megapixel front. Operating system is Android 4.4.2 kitkat.
As mentioned above, the Acer Iconia A1 840 is powered by Intel Atom Z3745 processor that runs at 1.8 GHz clock speed. Folks at cpureview.net now have its benchmark and say that it has 1209 Passmark score.
We feel that the A1-840 will be marginal upgrade over the A1-830
We will get more details once the company makes it public. Its expected release date is April and Acer will be offering both Android and windows 8 variants of it.