Size Comparison: Sony ZX100 vs Sony A20
Here is a real world size comparison between the new ZX100 and A20. The new ZX is not that much bigger and not much thinner and compact when compared to the ZX1. When comparing the ZX2 to ZX100, the difference is minimal, ZX2: 6.5 x 13.1 x 1.8 cm vs ZX100: 5.4 x 12 x 1.5 cm. Price is 699 Euros for the ZX100, so rather steep, but not as horrible as the ZX2.
More photos below from AV-Watch.