I made a separate post about the hand-tracking specifically because I think it's especially cool, but Oculus is announcing a lot of things today. Here's a list of some stuff so far, and I'll probably add some more if there are other details/articles/videos.

There's an official overall summary post here: Oculus Connect 6: Introducing Hand Tracking on Oculus Quest, Facebook Horizon, and More

Official individual blog posts (mostly with embedded videos):

• Introducing Hand Tracking on Oculus Quest—Bringing Your Real Hands into VR
• Introducing ‘Facebook Horizon,’ a New Social VR World, Coming to Oculus Quest and the Rift Platform in 2020
• Oculus Quest @ OC6: Introducing Hand Tracking, Oculus Link, Passthrough+ on Quest, and More
• Introducing Oculus Media Studio and the New and Improved Oculus TV, Your One-Stop Shops for Content Consumption and Distribution on Oculus Quest and Oculus Go
• A Closer Look at the New Oculus for Business, Launching in November
• Time to Play @ OC6: New and Upcoming Games Recap
• Learn the Ways of the Force in ‘Vader Immortal: A Star Wars VR Series - Episode II,’ Available Today on Oculus Quest and the Rift Platform
• Respawn Entertainment Reveals the Future of VR with ‘Medal of Honor: Above and Beyond’—Coming Soon to the Rift Platform
• Half Dome Updates: FRL Explores More Comfortable, Compact VR Prototypes for Work

Other posts:

• Ars Technica - Oculus announces plans to build augmented reality glasses
• Gamasutra interview - Respawn's first VR game is Medal of Honor: Above and Beyond