Key:

SX  - http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=X
PRX - http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=X
RHX - https://bugzilla.redhat.com/show_bug.cgi?id=X
DX  - http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=X
GX  - http://bugs.gentoo.org/show_bug.cgi?id=X

CVE-XXXX-YYYY: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=XXXX-YYYY

New in release 1.5.1 (2014-08-13):
* Massively improved offline abilities.
* Improved to be able to run with any JDK
* JDK 8 support added (URLPermission granted if applicable)
* Added DE and PL localizations
* Added KEY_ENABLE_MANIFEST_ATTRIBUTES_CHECK deployment property to control scan of Manifest file
* Control Panel
  - PR1856: ControlPanel UI improvement for lower resolutions (800*600)
* NetX
  - PR1858: Java Console accepts multi-byte encodings
  - PR1859: Java Console UI improvement for lower resolutions (800*600)
  - RH1091563: [abrt] icedtea-web-1.5-2.fc20: Uncaught exception java.lang.ClassCastException in method sun.applet.PluginAppletViewer$8.run()
* Plugin
  - PR1743 - Intermittant deadlock in PluginRequestProcessor
  - RH1121549: coverity defects
* PolicyEditor
  - codebases without permissions assigned save to file anyway (and re-appear on next open)
  - PR1776: NullPointer on save-and-exit
  - Custom permissions are properly formatted

New in release 1.5 (2014-04-02):
* IcedTea-Web now using tagsoup as default (tagsoup dependence) sanitizer for input
* JDK older then 1.5 no longer supported
* IcedTea-Web is now following XDG .config and .cache specification(RH947647)
* A console for debugging plugin and javaws
* Dialogs center on screen before becoming visible
* Support for u45 and u51 new manifest attributes (Application-Name, Codebase, Permissions, Trusted-only)
* Custom applet permission policies panel in itweb-settings control panel
* javaws -version flag
* New PolicyEditor for easily adding/removing permissions to individual applets
* Cache Viewer
  - Can be closed by ESC key
  - Enabling and disabling of operational buttons is handled properly
  - Time consuming operations are indicated by a mouse busy cursor
  - "Size" and "Last Modified" columns display localized data
* NetX
  - PR1465 - java.io.FileNotFoundException while trying to download a JAR file
  - Netx can now parse malformed jnlp files using tagsoup
  - PR1026 - Apps fail to run because of the nanoxml parser's strict XML validation
  - PR1473 - javaws should not depend on name of local file
  - Redesigned About dialogue layout and contents
  - Console made aware of plugin messages
* Plugin
  - PR854: Resizing an applet several times causes 100% CPU load
  - PR1271: icedtea-web does not handle 'javascript:'-protocol URLs
  - RH976833: Multiple applets on one page cause deadlock
  - Pipes moved into XDG_RUNTIME_DIR
  - Added debug to file
  - RH1010958: insecure temporary file use flaw in LiveConnect implementation
* Common
  - PR1474: Can't get javaws to use SOCKS proxy
  - Man page for itweb-settings
* Security Updates
  - CVE-2012-4540, RH869040: Heap-based buffer overflow after triggering event attached to applet