There's was a leak last year that showed the re-designed Atom on 22nm won't be available until 2014. However, in an interview with Mark Bohr in December he said:
"You'll see some pretty impressive SoC products coming next year on the 22nm generation"...he said this in December, 2012...so it's very possible he means Merrifield is coming this year. We will find out soon.
If you haven't read about the leaked Merrifield benchmarks here it is:
Intel Merrifield SoC benchmark scores online
Interesting, some benchmark score of Intel's Redhookbay, which is equipped with a dual-core Merrifield SoC (for smartphones), hit the web. In the graphics performance NenaMark2 benchmark the chip reaches a score of 58.30 fps (but that might be limited due to a 60 FPS cap). In the more general AnTuTu benchmark it scores 31612 points (!) and that is nearly three times as much as the Exynos 4412 based Samsung Galaxy S III and the Tegra 3 based HTC One X.
Redhookbay is shown as running Android 4.2.1 Jelly Bean, with a 1280 x 720 resolution display and the multi-core Merrifield, which scored 31,612 on AnTuTu benchmark. The processor is between 1.6GHz and 2GHz. The reported GPU is a PowerVR SGX 544MP. Unlike the Medfield, Merrifield offers 4G LTE support.
So far, performance tests of the demo handsets have been impressive, but power consumption is also a critical factor and Intel has yet to disclose full details of Medfield's performance in this critical area.
The Intel Merrifield SoC is anticipated to be revealed in February at the Mobile World Congress in Barcelona.