The United States Supreme Court has finished issuing its decisions for today, per SCOTUSblog's continuing coverage.
This means that the Affordable Care Act decision will be released on Thursday, at some point after 10AM.
According to Tom at SCOTUS (Supreme Court of the United States) blog, "From the opinion authorship, health care is almost certainly being written by C[hief][Justice] [John] Roberts, perhaps in part with Justice Kennedy." Probably not good news, but we'll have to wait until Thursday to find out.
The above quote is from the same live blog coverage as the link. Click on "9:00-6:00 coverage" at the bottom of the page, then scroll down to the end of the coverage.