Merrifeld is a 22nm Atom SOC. There are samples and benchmarks
Globalfoundries roadmaps are fantasies as befits a company that is associated with AMD. There are no shipping G-F 28nm products yet so talking about 20nm as if it was a shipping product too is ridiculous. G-F like Samsung has to change from gate-first to gate-last yet which is a whole new technology/yield learning curve. Both these companies rely on IBM process development which has proved inferior to Intel's over decades. PD-SOI, gate-first HKMG were all costly mistakes.