For the uninformed, Julia is a high-level, high-performance dynamic language centered around technical computing. The Julia high-performance JIT compiler is LLVM-based and features a large math function library, supports highly parallel execution, and is MIT licensed.
Julia v0.3.0 features enhanced performance for passing/returning Tuples, constructor improvements, multi-line comments support, a check bounds compiler option, a number of infix Unicode operators were added, improved reporting of syntax errors, and a variety of other language improvements.
Those wishing to learn more about this week's Julia 0.3 release can find the change-log via GitHub. If you're learning about Julia for the first time, you can learn more about the language over at JuliaLang.org.