I'm listening to the RHAP podcast right now and they have several spoilers from the live feeds already!
Firstly it looks like the three of the four people Jackson chose were...
CLIFF
JESSICA
DAVID
...the last name chosen seems to be a mystery at this time.
and apparently one who lost the competition and is officially out of the house is....
DAVID
If you don't know who that is... neither do I.
They also knew who is the first HOH and that person is...
Blond girl CHRISTY
And she is apparently planning to nominate the other blond girl Kathryn (because she doesn't like her) and Cliff (as a PAWN). Whether the house would actually vote Kathryn out.