I tweeted about these, but am adding a quick post for anyone who missed my timeline:

• Swift Benchmark Suite now Available. Benchmarks, libraries, and utilities intended to provide Swift workloads to measure performance and catch performance regressions.
• Swift Continuous Integration now Available. Continuous integration offers “a powerful tool for monitoring the health of the Swift project”. Powered by Jenkins, builds and runs tests for OS X, the iOS simulator, and on Linux, for Ubuntu 14.04 and 15.10 (x86_64).
• The Great Swift API Transformation. Worth catching up on because this one will have a big impact on traditional Cocoa devs.