OpenType specification change log

Version 1.8.2 — Released July 2017

A copy of the OpenType 1.8.2 specification formatted to show changes from OpenType 1.8.1 is available: OpenType 1.8.1 to 1.8.2 delta

Many editorial changes have been made, including the addition of a table of contents at the start of very long chapters, and revision of structure and field names in several chapters to conform to conventions used across this specification. Such changes were made in the following chapters:

In the summary of changes below, details given above are not repeated.

A significant editorial change pertains to documentation of design-variation axes and axis tags: previously, these were documented within the 'fvar' table chapter. The axis tags are also used in other tables, however, and may be relevant for non-variable fonts. Also, the set of registered axes may grow over time. Hence, documentation of axes and axis tags has been moved to a separate section, OpenType Design-Variation Axis Tag Registry.

In the summary of changes below, details are not listed for minor editorial changes in the following chapters: avar.htm, base.htm, cbdt.htm, cblc.htm, cff.htm, cff2.htm, cff2charstr.htm, chapter2.htm, cmap.htm, colr.htm, cpal.htm, cvar.htm, dsig.htm, ebdt.htm, eblc.htm, ebsc.htm, features_fj.htm, fvar.htm, gasp.htm, gdef.htm, glyf.htm, gpos.htm, gsub.htm, gvar.htm, hdmx.htm, head.htm, hhea.htm, hmtx.htm, hvar.htm, jstf.htm, math.htm, maxp.htm, merg.htm, mvar.htm, os2.htm, otff.htm, otvarcommonformats.htm, otvaroverview.htm, post.htm, sbix.htm, scripttags.htm, stat.htm, vvar.htm, wgl4b.htm.


Summary of Changes:


Version 1.8.1 — Released January 2017

Many editorial changes have been made, including global changes to the names of data types used. Some technical corrections were made that do not affect structure definitions. One structure change was introduced: a field was added in the 'STAT' table.


Summary of Changes:


Version 1.8 — Released September 2016


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Version 1.7 — Released March 2015
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Version 1.6 — Released April 2009 (updated July 2010)
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Version 1.5 — Released May 2008
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Version 1.4 — released 11 October 2002
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Version 1.3 — released April, 2001
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Version 1.25 — released July, 2000
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Version 1.2 — released November, 1998
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Version 1.1 — released April, 1998
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Version 1.01 — released October, 1997
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Version 1.0 — released April, 1997



This page was last updated 24 July 2017.

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