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<p>Dear EM-ers,</p>
<p>We have now released the first stable release of RELION-3.1
(called RELION-3.1.0). We recommend those using RELION 3.0.x or
3.1-beta to upgrade to this version.</p>
<p>As before, you can download the latest stable RELION using git to
checkout the master branch of <a class="moz-txt-link-freetext" href="https://urldefense.com/v3/__https://github.com/3dem/relion__;!!Mih3wA!TJ2XsbgaH-GZ9GlIViJiYd2p71fQRhODnU5X_wH6FJCCQxKP9MBmJ7mo2fFDok7thw$">https://github.com/3dem/relion</a>.
Alternatively, you can download a tarball from: <a class="moz-txt-link-freetext" href="https://urldefense.com/v3/__https://github.com/3dem/relion/releases/tag/3.1.0__;!!Mih3wA!TJ2XsbgaH-GZ9GlIViJiYd2p71fQRhODnU5X_wH6FJCCQxKP9MBmJ7mo2fGojPqf_w$">https://github.com/3dem/relion/releases/tag/3.1.0</a><br>
</p>
<p>Note that RELION-3.1.0 remains proudly open-source and free to
use by anyone, because #OpenSoftwareAcceleratesScience! (See <a class="moz-txt-link-freetext" href="https://urldefense.com/v3/__https://github.com/3dem/relion/blob/master/LICENSE__;!!Mih3wA!TJ2XsbgaH-GZ9GlIViJiYd2p71fQRhODnU5X_wH6FJCCQxKP9MBmJ7mo2fGwYNjcuQ$">https://github.com/3dem/relion/blob/master/LICENSE</a>
for details.)<br>
</p>
<p>Major changes since RELION 3.0.x include:</p>
<ul>
<li>High-order aberration correction & anisotropic
magnification correction in CTF refinement<br>
(<a href="https://urldefense.com/v3/__https://doi.org/10.1107/S2052252520000081__;!!Mih3wA!TJ2XsbgaH-GZ9GlIViJiYd2p71fQRhODnU5X_wH6FJCCQxKP9MBmJ7mo2fGCVC31-g$" rel="nofollow">https://doi.org/10.1107/S2052252520000081</a>)</li>
<li>External jobtype to run third-party software in the RELION
pipeline</li>
<li>Schedules for designing & executing on-the-fly processing
procedures</li>
<li>Tweaks to GUI, pipeliner and helical processing</li>
<li>Symmetry relaxation (special thanks to Vahid Abrishami for
code contribution)</li>
</ul>
<p>The new tutorial is available at <a class="moz-txt-link-freetext" href="https://urldefense.com/v3/__ftp://ftp.mrc-lmb.cam.ac.uk/pub/scheres/relion31_tutorial.pdf__;!!Mih3wA!TJ2XsbgaH-GZ9GlIViJiYd2p71fQRhODnU5X_wH6FJCCQxKP9MBmJ7mo2fEZczHGRA$">ftp://ftp.mrc-lmb.cam.ac.uk/pub/scheres/relion31_tutorial.pdf</a>.</p>
<p>Support for the EER movie format is not yet included in this
release.<br>
Please use a special version in the <code>devel-eer</code> branch
at <a href="https://urldefense.com/v3/__https://github.com/3dem/relion/tree/devel-eer__;!!Mih3wA!TJ2XsbgaH-GZ9GlIViJiYd2p71fQRhODnU5X_wH6FJCCQxKP9MBmJ7mo2fERTqR5WA$">https://github.com/3dem/relion/tree/devel-eer</a>.<br>
This feature will be merged in near future as a minor update
(version 3.1.x).</p>
<p>Have fun,</p>
The RELION team
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