LyX is a fully fuctional WYSIWYM (what you see is what you mean) frontend for LaTeX wnich allows users with no programming knowledge to get the full benefits of LaTeX. It differs from products such as TeTeX as one needs to know no code and can simply write and mark any text as a footnote of chapter heading etc., and then hit the PDF button to get a perfectly formatted output.

New

Document Input/Output

• Add support for some conference poster classes (a0poster, beamerposter, sciposter) (bug 8714).
• Add support for the sectionbox and tcolorbox packages (part of bug 8714).
• Add support for PDF annotations (via pdfcomment package) (bug 6975).

TeX2LyX Improvements

• Support for bibliographies using the package bibtopic.
• Support for textual references (LaTeX-command namref from the package nameref).
• Support for items in itemize environments that have an optional argument.
• Support for the math font of the Iwona and Kurier font families.
• Support for the Libertine fonts.
• Support for a relative length as paragraph separation.
• Support for relative lengths in horizontal and vertical spaces.
• Support for glue lengths in horizontal and vertical spaces.

User Interface

• References no longer truncated in outliner (bug 9312).
• Allow computing selected subformulas with computer algebra systems.
• Number correctly footnotes in title layouts (part of bug 2666).
• Ctrl+A is now bound to inset-select-all, which does a local selection (current inset) and grows at each new invokation. Try it!
• Debug options in message pane are now sorted alphabetically.

Documentation and Localization

• New example file "PDF-comment.lyx" describing the support for PDF annotations.
• Updated Arabic, French, German, Japanese, Portuguese, Slovak and Swedish user interface localization.

Bug Fixes

Document Input/Output

• Fix crash on exporting a recursive math macro (bug 9140). Recursive macros are invalid, so typesetting will still fail with "TeX capacity exceeded".
• Fix baseline calculation in last paragraph (bug 9231).
• Fix export of xfig external insets (bug 9244).
• Fix incorrect output of ampersands when multiple keys are given for a citation (bug 9296).
• Output package options (specified with PackageOptions layout tag) before loading any potentially affected package (bug 9355).
• Fix export of documents that use the LaTeX-packages mhchem and wasysym (bug 9266).
• Remove unnecessary preamble code in LaTeX export of documents using the class REVTeX 4.1 file (bug 4625).
• Fix for improper environment with duplicate PATH variable entries. This happens on Mac OS X 10.10 (Yosemite) where launchd(8) passes such an environment to LyX when started from the dock (bug 9317).
• Protect insets when needed in subfloat captions (bug 9346).
• Do not swallow spaces in text-in-math mode (bug 7970).
• Do not insert a protected space after some math-spaces (bug 9319).
• Fix problem when some special characters appear in the document directory name on Windows (bug 9342).

LyX2LyX

• Fix import of LyX 2.0 documents with complex beamer arguments (bug 9254).
• Fix import of LyX 2.0 IEEEtran documents (bug 9273).
• Fix import of Chunk layout with trailing empty paragraph (bug 9298).
• Fix import of chunk layouts containing newlines (bug 9300).
• Maintain paragraph settings (alignment etc.) when importing chunk layouts (bug 9320).
• Fix export to LyX 2.0 of chunk insets without optional argument (bug 9343).
• Fix import of ERT beamer block titles which are preceeded by a language switch.
• Fix and simplify paragraph params parsing in get_containing_layout.

User Interface

• Fix alignment rendering of multirow in LyX (bug 8976).
• Fix mapping of ISO_Left_Tab key, which was erroneously assigned to Tab (instead of BackTab).
• Disallow to insert program listings to footnotes and margin notes (bug 9321).
• Fix computer algebra system computations in formulas with '=' signs.
• Fix rendering of varOmega on OS X (bug 7954).
• Only allow 1 paragraph in footnotes when they are part of a title layout (bug 2666).
• When switching classes, warn user about all unapplied document changes (1. part of bug 9356).
• When adding a module, warn user about all unapplied document changes (2. part of bug 9356).
• Do not enable the Apply button in the document dialog just because a module was selected in the widget (without actual change) (bug 9365).
• Fix logic of "Maintain aspect ratio" checkbox in the graphics dialog (bug 9357).
• Fix most frequent reason for crash while editing with open view source window (bug 9336).
• Fix crash when pasting citation into math formula (bug 9302).

Internals

• Fix wrong test in LyX server.
• Fix possible memory corruption on copying to the clipboard.
• Fix possible memory corruption during LaTeX log file parsing.
• Make some math messages translatable (bug 1908).

Documentation and Localization

• Fix language settings for all IEEEtran templates (bug 9350).
• The template document for REVTeX 4.1 has been rewritten.

LyXHTML

• Fix export of ll, gg, ne and neq in math formulas (bug 9372).

TeX2LyX

• Do not ignore table columns with unknown column specifiers (bug 9311).
• Parse tikzpicture environment correctly (bug 9011).
• Fix misparsing of textgreek without polyglossia (bug 8553).
• Parse post command argument insets (bug 8473).
• Parse parsing of verbatim options containing commands (bug 9113).

Build/Installation

• Fix some compiler warnings.
• Fix a few minor issues in the RPM spec file template (bug 9349).