I didn't see this posted anywhere else, but this is promising. This will make the lead times longer and bigger for new content. It'd be cool if Rare introduced us to these teams at some point via youtube video(s). It's worth reading the whole interview with Joe Neate and Mike Chapman below.
Joe: "We don't like doing anything "normal" or "traditional," we like to explore new things. We like this idea for introducing new content. We want our content updates to be very regular, and we're currently nailing that down. We split into three separate game teams to support this, switching between content updates. The Hungering Deep team had the shortest lead time, working on it for the last six or seven weeks. That team will now move on to their next big update. Then you have the teams working on Cursed Sails and Forsaken Shores, and those guys have a bit of a longer lead time. What we're trying to do is bring new content faster to players, while extending the amount of lead time each team has to create this bunch of new content.
As we build up, each time will hopefully have a longer lead time as well. We're currently spinning up the fourth team, we're all in on Sea of Thieves..."
Sea of Thieves Interview: Adding a fourth content team, future updates, and The Hungering Deep
