From March 8 - 22, 1.6 million records from the archives of the Guinness Brewery are going to be free-to-view on Ancestry!
The "digitized trove" spans "more than 160 years" and has two main categories: "employee records" and "trade ledgers". According to Ancestry: "the employee records date from 1799 to 1939, and include workers’ names and, in some cases, details about their home addresses, occupations, spouses, children and marriages."
The link to the CNN article on this records release can be found here.
Personally, I'm a little excited to see if any of my ancestors turn up, though it's a longshot. Any "new" Irish records are always appreciated though!