The history of releases of the Inform

Inform

Over the following decade, version 6 became reasonably stable and a popular language for writing interactive fiction. In 2006, Nelson released Inform 7 , a completely new language based on principles of natural language and a new set of tools based around a book-publishing metaphor.- Z-Machine and...

 programming language for interactive fiction

Interactive fiction

Interactive fiction, often abbreviated IF, describes software simulating environments in which players use text commands to control characters and influence the environment. Works in this form can be understood as literary narratives and as video games. In common usage, the term refers to text...

 dates back to 1993. The Inform 6 compiler and Library have always been separately maintained and released.

Original Inform Compiler Version	Library Release	Inform 7 System Version	Date	Reference	Notes
1			May 9, 1993		Simultaneous release of Curses Curses (computer game) Curses is an interactive fiction computer game created by Graham Nelson in 1993. It was originally developed on an Acorn Archimedes using Acorn C/C++, before Nelson moved to his Inform programming language, which was simultaneously released. It was the first non-test game developed in the language.... .
2			June 9, 1993
3			November 1993
4			January 1994
5			June 1994
5.5			June 1995		Last of the pre-Inform 6 releases.
6	6/1		April 29, 1996		beta release. Inform is rewritten from scratch.
6.02			May 5, 1996		beta release
6.03			May 13, 1996		beta release
6.04	6/2		September 1996
6.05			September 1996
6.10	6/3		December 18, 1996
6.11	6/4		January 28, 1997
6.12			March 26, 1997
6.13	6/5		April 5, 1997
	6/6		August 18, 1997
	6/6		August 19, 1997		Rerelease with tracing code removed
	6/7		September 1997
6.14			September 8, 1997
6.15			March 23, 1998
6.20			December 1996
	6/8		December 13, 1998
6.21	6/9		April 29, 1999
			April 29, 1999		Announcement of upcoming Glulx support
	6/10		November 6, 1999		Original release
	6/10		November 13, 1999		Bugfix release
6.21.1			November 24, 2000
6.21.2			August 15, 2000
6.21.3			November 6, 2002		Included support for Glulx Glulx Glulx is a 32-bit portable virtual machine intended for writing and playing interactive fiction. It was designed by Andrew Plotkin to relieve some of the restrictions in the venerable Z-machine format...
6.21.4			June 17, 2003
6.30	6/11		February 4, 2004
6.30.1			February 27, 2004
6.30.2			June 6, 2004
6.31			February 10, 2006
	6/10N	3K27	April 30, 2006		Public beta
		3K56	May 4, 2006
		3L95	May 14, 2006
		3M43	May 21, 2006
		3P53	June 9, 2006
		3R85	June 26, 2006
		3T38	July 10, 2006
	6/11N	3V01	August 2, 2006		Preliminary Glulx support for Inform 7
		3Z95	September 14, 2006
		4B91	November 10, 2006
		4F59	December 21, 2006
		4K40	January 23, 2007
		4K41	January 23, 2007		Bugfix for Mac OS X on G4 and G5 processors
		4S08	March 25, 2007		Fixed many bugs, incorporates ideas from external consultation, and adds preliminary Linux Linux Linux is a Unix-like computer operating system assembled under the model of free and open source software development and distribution. The defining component of any Linux system is the Linux kernel, an operating system kernel first released October 5, 1991 by Linus Torvalds... support
		4U65	April 27, 2007
		4U67	May 7, 2007		Mac OS X only release
		4W37	July 27, 2007
		4X60	August 24, 2007
		5G67	November 10, 2007		First release with an official GUI for Linux
		5J39	December 1, 2007
		5T18	April 30, 2008
		5U92	September 10, 2008
		5Z71	April 18, 2009
		6E59	June 12, 2010

The "N" series libraries are modified versions of the regular Inform 6 libraries with special support for Inform 7. The first modified version, 6/10N, was actually based on parts of 6/9 as well as 6/10. The goal is to eventually merge the "N" series into the main series, producing one library that can be used with both Inform 6 and Inform 7, compiling to both Z-code and Glulx.