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# Mantid 4.0.0 Release Notes¶

We are proud to announce version 4.0.0 of Mantid.

This major release sees the introduction of a brand new graphical user interface, MantidWorkbench, which will eventually replace MantidPlot. The MantidWorkbench has been built from the ground up to allow more automated testing in an effort to vastly improve on the stability of MantidPlot. In addition it offers:

• matplotlib-based plotting: Matplotlib is the defacto-standard plotting package for the scientific community and one of its core goals is to produce publication-quality plots

• cleaner interface: MantidPlot had many toolbars, buttons and menus that would confuse new users. MantidWorkbench aims to have a simpler interface and removes many legacy tools that were unused from MantidPlot

• support for high-dpi displays: Based on Qt5, allowing for improved handling of high-resolution screens such as retina displays

This is just one of the many improvements in this release, so please take a look at the release notes, which are filled with details of the important changes and improvements in many areas. The development team has put a great effort into making all of these improvements within Mantid and we would like to thank all of our beta testers for their time and effort helping us to make this another reliable version of Mantid.

## Citation¶

Please cite any usage of Mantid as follows:

• Mantid 4.0.0: Manipulation and Analysis Toolkit for Instrument Data.; Mantid Project. doi: 10.5286/SOFTWARE/MANTID4.0

• Arnold, O. et al. Mantid-Data Analysis and Visualization Package for Neutron Scattering and mu-SR Experiments. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 764 (2014): 156-166 doi: 10.1016/j.nima.2014.07.029 (download bibtex)

## Full Change Listings¶

For a full list of all issues addressed during this release please see the GitHub milestone.