It's following the standard liberal scandal playbook (See also Hillary's emails, Benghazi, etc)

You release information a little bit at a time. Then, after months of stonewalling, you quietly drop the bombshell late Friday night, when no one is paying attention. Then, on the Sunday shows and thereafter, you claim it's old news and everyone needs to move past it, while still claiming it's a witch hunt, you were framed, everyone else did it too, etc

They kind of admitted it before, but we just now got the list of targeted conservatives