Humble has made a new partnership with Epic Games to allow Epic Store games to be made available on the Humble Store as well as in the Humble Bundle. The partnership was announced at the same time that Humble announced they had raised over $145 Million for charity over their lifetime, and they hope to make more thanks to the new partnership.
During the announcement, Epic wanted to make it very clear that they wanted the Epic Store to not be 'a walled garden' which prevented developers from selling their keys on other platforms. It is not year clear what the partnership will actually entail beyond the ability for codes from the Humble Bundle to be redeemed on the Epic Store.
TechRaptor has reached out to Humble for more details about their partnership with Epic and we'll update this story as we get more details.