Hello everybody,

The Taverna team are pleased to announce the release of the Taverna
2.5.0 Workbench and Command Line Tool.

Taverna 2.5.0 includes additional functionality (interaction service,
PROV support, components), a simplified installation, user interface
improvements and bug-fixes.

The Workbench and Command Line Tool can be downloaded from
http://www.taverna.org.uk/download/workbench/2-5 and
http://www.taverna.org.uk/download/command-line-tool/2-5/

Simplified Installation
=======================

To simplify installation on common operating systems, Taverna
distributions now come bundled with the Java Runtime Environment from
OpenJDK and, in the case of the Workbench, the required Graphviz
binaries. The installation no longer requires you to install the JCE
Strong Encryption policy.

Domain-specific versions
========================

Taverna Workbench and Command Line Tool are now available in
domain-specific versions for Astronomy, Biodiversity, Bioinformatics
and Digital Preservation.  Domain-specific editions add support for
specific service types and come pre-populated with lists of available
services and example workflows that are specifically tailored for a
given domain.

The Core edition contains a Taverna Workbench suitable for building
scientific workflows in any domain, accessing general services such as
REST or SOAP Web services and command line tools.

Enterprise Taverna is equivalent to the Core edition with BioMart,
BioMoby, SoapLab, API Consumer, Service Catalogue and WebDAV
installed.

Interaction service
===================

The Interaction Service has been added to the Workbench. This provides
the ability to ask questions and tell information to users during the
running of the workflow. Unlike the previous interactive local
workers, this service uses web pages, and therefore also works when
running workflows on a Taverna Server via Taverna Player.

Component service
=================

The Component capability has been added. This allows the usage of
component services, which encapsulate a nested Taverna workflow that
has been constructed and described for compatiblity with other
components within a chosen Component Family.

This allows for publication of reusable and shareable workflow
fragments, which appear as single services within the master workflow.

Provenance
==========

Support for exporting Taverna-PROV provenance format has been
added. This adds a new button "Save Provenance Bundle" when clicking
"Save All" from the results perspective.

The provenance bundle is a ZIP file containing all input, output and
intermediate values as separate files, along with the provenance of
the workflow run. The bundle is based on the Research Object Bundle
specification, and complies with the W3C PROV-O provenance
specification.

For details, see https://github.com/myGrid/taverna-prov

Tutorials and examples
======================

Tutorials for Taverna are available under the Taverna 2.x
documentation at 
http://www.taverna.org.uk/documentation/taverna-2-x/tutorials

Example workflows can be found under the Starter pack tab in the
myExperiment perspective of the Workbench. They can also be downloaded
from the myExperiment Web site.

Known issues
============

Although Taverna 2.5.0 contains many improvements there are some known
issues with it. These are detailed in our issue tracker Jira[1]

System requirements
===================

Please check the details of Taverna 2.5 system requirements[2]


Licence and source code
=======================

All editions of Taverna, except for Astronomy, are distributed under
the LGPL 2.1 licence [3].  The Astronomy editions are distributed under
the GPL 3 licence [4].

The source code for Taverna can be retrieved from our Subversion
repository [5]. We also recommend you to sign up to the taverna-hackers
mailing list [6] if you are a developer.

Reporting problems
==================

If you find any problems that are not listed in our Jira, then
please send them to the taverna-users or taverna-hackers mailing
lists. Our support team is monitoring the mailing lists and will try
to respond to questions as soon as possible.

If you prefer not to subscribe to our mailing lists, you can send your
questions directly to [email protected] and a member of our
support team will respond to your inquiries.

The Taverna Team

[1] http://dev.mygrid.org.uk/issues/issues/?filter=10412
[2] http://www.taverna.org.uk/download/workbench/system-requirements/2-5/
[3] http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
[4] http://www.gnu.org/licenses/gpl.html
[5] http://code.google.com/p/taverna/
[6] https://lists.sourceforge.net/lists/listinfo/taverna-hackers

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