> eligibility to participate in the pilot...will be limited to taxpayers with certain types of income, credits and deductions – taxpayers with relatively simple returns. The IRS today announced it anticipates specific income types, such as wages on a Form W-2, and important tax credits, like the Earned Income Tax Credit and the Child Tax Credit, will be covered by the Direct File pilot.

This is what I was mostly curious about. So, I'm guessing things like ISOs, AMT, capital gains from investments etc would not be supported by this service yet.