What do you mean directions to developers? As a developer, I will write my app in the new more touch friendly "Metro" UI because it can also be used with a key

What do you mean directions to developers? As a developer, I will write my app in the new more touch friendly "Metro" UI because it can also be used with a keyboard and mouse. The familiarity that is there in the old platform is the familiarity of the tools and the API which I believe continue would to exist even with the new shell.