Except that it's not much of a change. US executive administrations and legislatures, at the federal and state levels, have generally been hostile to whistleblowers, and to freedom of the press and civil rights in general, for decades.
There are occasional exceptions, such as the FOIA extension for electronic documents during the Clinton administration, but most of the pro-free-press stuff happened in the 1960s and 1970s. Since then it's mostly been efforts by the executives and legislatures to restrict press freedoms and access to records and meetings, with only some resistance from the courts.
Certainly the record of the Obama administration, and Congress during that time, has not been good - and Obama's claims about promoting transparency ring hollow.
But it's not so much "change we can believe in" as "meet the new boss, same as the old boss" - and even more the persistence of hegemonic power through the cumulative effects of a widespread network of actors, human and institutional, with various bits of influence.