Based on Tcl/Tk 8.6a3
Tcl Changes
Changes to Tcl Commands
New Commands
New Subcommands
Expanded Syntax / New Options
Changes to Tcl variables
New global variables
Changed Tcl behavior
- The following commands are script-modifiable ensembles: binary
- lset can now set the element at index end+1, growing the list.
- string trim* now uses a different set of whitespace characters as a default.
Tk Changes
Changes to Tk Commands
New Commands
New Subcommands
Expanded Syntax / New Options
- New -angle option for canvas text items [L29 ]
Changed Tk behavior
New Events
Changes to Bundled Packages
New packages
Updated packages
Changes to consider when moving to Tcl 8.6