The de facto hardware experts over at AnandTech have spent some time with the newest CPU from Qualcomm: the MSM8960, sporting the new 28nm Krait architecture in dual-core, 1.5GHz form. They've put it through their suite of benchmarks including Linpack, SunSpider, BrowserMark, Vellamo, and Basemark OS. In a nutshell: the MSM8960 absolutely destroys every other phone/CPU on the market right now in every. single. benchmark.
An example of what to expect.
The Krait architecture supports 1, 2, and 4 CPUs, and the smaller transistor size (28nm) means that it should outperform most (if not all) comparative 40nm CPUs and offer better battery life. It remains to be seen how well Nvidia's first-to-the-market quad-core Tegra 3 CPU holds up in comparison, too.
Devices packing Krait-powered CPUs should begin shipping sometime in Q2.