Here are the release notes:

Terminal

  • Alternate buffers for preserving state between shells and fullscreen programs.
  • Fixed a line wrapping bug in tmux and other programs.
  • Cursor hiding sequences now work.

User Interface

  • Copied text preserves lines and ignores wrapping.
  • Pasting large amounts of text no longer causes cutoffs.
  • Increase/decrease font scale menu and shortcut.
  • A few new sounds (thanks to Bastian Masanek)

Here are the release notes:

Terminal

  • Live text reflowing.
  • Background color erase.

Window

  • Simplified text/window sizing.
  • Closing windows warns about ending processes.

Bugs

  • Non-PNG reflection pictures now save properly.
  • TMPDIR is properly inherited.

Here are the release notes:

New Features

  • Private key authentication.
  • Transfer keys with iTunes file sharing or by pasting.
  • Security improvements.