Question: Java Embedding Plugin is shipped on all recent versions of a discontinued free, open source, GUI-based Web browser that was announced as no longer being developed on what date?

Context paragraphs:
Play Framework: Play is an open source web application framework, written in Scala and also usable from other programming languages that are compiled to Bytecode, e.g. Java (Play includes a Java API in more recent versions), which follows the model–view–controller (MVC) architectural pattern.  It aims to optimize developer productivity by using convention over configuration, hot code reloading and display of errors in the browser.

Nokia Browser for Symbian: Nokia Browser for Symbian (formerly known as Web Browser for S60) is the default web browser for the S60 and Symbian mobile phone platform.  The browser is based on a port of Apple Inc.’s open source WebCore and JavaScriptCore frameworks which form the WebKit rendering engine that Apple uses in its Safari Web browser.

DWR (Java): DWR, or Direct Web Remoting, is a Java open source library that helps developers write web sites that include Ajax technology.  It allows code in a web browser to use Java functions running on a web server as if those functions were within the browser.  The DWR project was started by Joe Walker in 2004, 1.0 released at 29 Aug 2005.

Java Embedding Plugin: Java Embedding Plugin (JEP) enables Java on Mac OS X with non Safari browsers.  This plugin is shipped with Firefox 1.5 on, and all recent versions of SeaMonkey and Camino.

Chromium Embedded Framework: The Chromium Embedded Framework (CEF) is an open source framework for embedding a web browser engine based on the Chromium core.  It allows developers to add web browser control and implement an HTML5-based layout GUI in a desktop application or to provide web browser capabilities to a software application or game, and provides the infrastructure for developers to add HTML rendering and JavaScript to a C++ project.  It also comes with bindings for C, C++, Delphi, Go, Java, . NET / Mono, and Python and runs on Linux, Mac OS X and Windows.

Rekonq: rekonq is a lightweight, QtWebKit-based web browser developed inside the free software project KDE.  It is the default web browser of Chakra GNU/Linux, and was formerly of Kubuntu (between versions 10.10 and 13.10).  rekonq has been officially included in KDE Extragear since May 25, 2010.  In contrast to Konqueror, a web browser and file manager also developed by KDE, rekonq aims to be a standalone and simple web browser.

Yandex Browser: Yandex Browser is a freeware web browser developed by the Russian web search corporation Yandex that uses the Blink web browser engine and is based on the Chromium open source project.  The browser checks webpage security with the Yandex security system and checks downloaded files with Kaspersky anti-virus.  The browser also uses Opera Software's Turbo technology to speed web browsing on slow connections.

Camino (web browser): Camino (from the Spanish word "camino " meaning "path") is a discontinued free, open source, GUI-based Web browser based on Mozilla's Gecko layout engine and specifically designed for the OS X operating system.  In place of an XUL-based user interface used by most Mozilla-based applications, Camino used Mac-native Cocoa APIs. On May 30, 2013, the Camino Project announced that the browser is no longer being developed.

IcedTea: IcedTea is a build and integration project for OpenJDK launched by Red Hat in June 2007.  IcedTea-Web is a free software implementation of Java Web Start and the Java web browser plugin.  IcedTea-Sound is a collection of plugins for the Java sound subsystem, including the PulseAudio provider which used to be included with IcedTea.  The Free Software Foundation recommends that all Java programmers use IcedTea as their development environment.

O3D: O3D is an open source (BSD license) JavaScript API created by Google for creating interactive 3D graphics applications that run in a web browser window or in a XUL desktop application.  O3D may be crafted for use in any application area, however it is geared towards games, advertisements, 3D model viewers, product demos, simulations, engineering applications, control and monitoring systems, or massive online virtual worlds. O3D is currently in Google's incubation lab, and originally built as a web browser plugin, the new implementation of O3D is a JavaScript library implemented on top of WebGL.

Supporting paragraphs: Java Embedding Plugin Camino (web browser)
Answer: May 30, 2013