The triple script dialect is a memory-safe language with a C-like syntax designed to facilitate non-destructive compilation and the goals of the triplescripts.org group. Its closest cousin in spirit is Go and borrows inspiration from Smalltalk. The dialect supports first-class functions, typically late-bound with the option of being tightly bound, and functions/methods are generally defined with either an Awk-ish declarative syntax, or in a terse form as a constructor for class definitions with associated methods.
The main imperative of triplescripts.org is to make the hypothetical world posed in the Build Manifesto a reality, and the triple script dialect has been designed for this reason. However, the triple script dialect is expected to be generally useful for many kinds of programs (even programs that are not strictly triple scripts themselves). On the other hand, it's not an explicit goal for this group to take such things into account in the decision-making process about the future of the triple script dialect.
There is no formal grammar at this time. The triplescripts.org reference compiler trplkt is currently pre-1.0. As we work towards standardization, it's extremely likely that the triple script dialect implemented in future compiler versions will break programs written for earlier versions while the compiler has not reached 1.0. Neither trplkt itself nor any other triplescripts.org project is guaranteed to be be free of errors that would prevent them from being broken. However, we are committed to stability after 1.0, with the option to break backwards compatibility in 2.0 (if we ever reach that point; the work of this group is expected to be low-churn once 1.0 is reached).