A cast commentary is just like a director’s commentary that you’ve probably seen on Blu-rays of DVDs. The cast and their guest(s) talk about the finished film while they watch it.
How do I get them?
If you increase your pledge, regardless of the level, by 15 dollars or more, we will add your pick of two free cast commentaries to your reward. Most of the cast has signed on to record these special commentaries including John Gruber, Jason Snell, and Adam Lisagor. If you have backed at the $300 level or higher, the cast commentaries are already included in your reward.
I bumped my pledge by $15 or more, now how do I claim the cast commentaries as a reward?
Kickstarter doesn't provide a way for project creators to add 'bonus level rewards'. However, Kickstarter does a provide a full record of all pledges and adjustments, so we'll have all the data we need in order to see that you increased your pledge and ensure that you get the commentaries when we fulfill rewards.