We've got several pieces of news today!
Carol Nichols (aka @carols10cents) is joining the core team. Carol has a long history with Rust, spanning a wide array of interests. She's been involved from the early days in community building, both as an organizer (including putting together the Rust Belt Rust conference) and more recently as a member of the community team. She has contributed to Rust's tooling story, especially around crates.io, and recently became a member of the tools team in recognition of that work. She's a talented RFC writer and shepherd, and brings a keen, practical eye to technical questions. She's a coauthor of the new edition of the Rust book, where she's been indispensable in getting the book done in a timely fashion, as well as doing extensive editing, review, and organization. And she's the co-founder of the first Rust consultancy, Integer 32, which amongst other things offers Rust training.
Carol is going to supplement the core team with much-needed additional perspective from the production user standpoint, which her company uniquely positions her to do.
Nick Cameron (aka @nrc) is also joining the core team. Like Carol, Nick has been involved in Rust for quite a while and across diverse areas. He landed dynamically sized types, built rustfmt (and is leading the strike team to standardize it), laid out the design for the new plugins and macro system, and spearheaded the Rust Language Service project to support IDEs through rustc. Along the way he's landed many important RFCs and changes to compiler internals.
Nick will join the core team in anticipation of some forthcoming changes to the tools subteam. Right now, that team covers too wide a set of interests, and as we work to scale up Rust's leadership, we plan to break the team into smaller chunks, including one for infrastructure (CI), for Cargo/crates.io, and one focused purely on developer tools. Nick is currently on paternity leave, but when he returns, he will be heading up the new devtools team. More on that soon!
Finally, @pcwalton has been part of Rust forever, and his impact on the project cannot be overstated. However, for the last couple of years his focus has shifted purely to the Servo project, and at this point he's moving into alumni status for the core team. That means that decisions will not block on him, but as with all alumni, he will remain welcome to join meetings and discussions, and he will continue to be an important point of contact between the Rust and Servo projects.