IDL 8.3 was quietly released on Monday. While I don’t see any truly major features, it has quite a few useful additions:

1. PLOT, SURFACE, and CONTOUR can create displays represented by an equation
2. implied print, i.e., just type an expression at the command line and it will be printed
3. convenience routines for HDF5
4. asynchronous timers not attached to widgets
5. static methods (marked using the “static” compile_opt option)
6. index array creation with expressions like [0:9:2]
8. unit conversion routine, IDLUNIT