Here are the release notes:

Retina Display Support

  • Enable it in the Preferences
  • Leave it off for higher framerates
  • Works with mixed monitor setups

New Mouse Options

  • Copy on select
  • Paste with the right or middle mouse button
  • Enable these features in the Terminal section of the preferences

Visual Improvements

  • Glow effect looks much more realistic
  • Noise and retrace effects don’t go outside the picture area
  • Transparency works in Low rendering mode
  • Minimal rendering mode text is sharp
  • Fixed a bug that was causing a slight flash when switching windows

Here are the release notes:

Misc

  • Autosaving can be disabled for text documents.
  • Smoother window resizing and font zooming.
  • Better resampling for Picture and Camera documents.
  • Reflection image can be selected using an Open dialog.

Bug Fixes

  • Text no longer disappears in background windows on certain ATI graphics cards.
  • Initial window sizing and placement is smarter.
  • Scrolling never occurs when clicking in the toolbar.

Here are the release notes:

Unicode

  • Thousands of new characters: Punctuation, Symbols, Greek, Hebrew, Math, more Latin and Cyrillic, etc.
  • Supported ranges are U+0000..U+0600, U+2000..U+2200, and U+25xx.
  • Classic fonts fall back to Monaco, for now.

Sizing

  • Window sizing is more consistent when resuming the app, making new documents, and changing themes.
  • Font zooming is smoother, sharper, and more powerful.
  • Classic and modern fonts are sized more consistently.

Other

  • Immersive mouse cursor is now optional, and is off by default.
  • The window title shows the grid size.
  • Selection looks better over multiple foreground/background colors.
  • Toolbar with font controls.