They actually did touch on the current Bachelor, just to point out who he is, etc.
They concentrated on the former shows and why they did NOT succeed. Everyone, of course, had their own opinions as to WHY.
You can still sense the animosity between the first two, Amanda and Alex, between Alex and Trista, and between Aaron and Helene. They were literally ticked off. There was no interview with Estella, but they did confirm that she and Bob broke up at Trista and Ryan's wedding and that he was dating Rebecca Budig. JERK.
I think the show is set up to fail with the relationships, too bad they take them soooo seriously.