Personal technology never stops changing. Some new products and services are game changers, like Apple's iPhone and iPad. Others are clever twists or refinements, like each successive version of Google's Android platform, which gets better and better. Others are bold gambles, like Microsoft's new Windows 8, which hopes to combine both a tablet experience and a traditional PC environment in one operating system. But there's always something new, from large companies and small ones.

So here are a few things consumers will likely...