Sponsored presales (typically American Express or Audience Rewards for Broadway shows) have contractual obligations to be listed on the production's website at a certain point, assuming they have a website. I see nothing on Hadestown's website so it's probably too early to have one announced.
As for Hugh Jackman, if there was a pre-sale they would have listed it in the press release, and it only lists December 7 for "most dates" and December 10 for MSG. You should also check the venue's website + their social media in the event they have a venue presale.
Updated On: 11/29/18 at 09:55 PM