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11-Aug-2018 New paper describes octave plots for visualizing alpha diversity.

12-Jun-2018 New paper shows that one in five taxonomy annotations in SILVA and Greengenes are wrong.

18-Apr-2018 New paper shows that taxonomy prediction accuracy is <50% for V4 sequences.

05-Oct-2017 PeerJ paper shows low accuracy of closed- and open-ref. QIIME OTUs.

22-Sep-2017 New paper shows 97% threshold is wrong, OTUs should be 99% full-length 16S, 100% for V4.

UPARSE tutorial video posted on YouTube. Make OTUs from MiSeq reads.



Provisional and fixed builds

See also
Known bugs and fixes

Provisional versions
If I send you a link to a version that is newer than the latest version posted on the download request page, then it is considered provisional. This is because it has not undergone full regression testing. It should therefore be considered alpha or beta software, and is generally not recommended for production use unless you need a specific fix.

Fixed versions usually don't exist as builds
This may sound strange, but there is a rational explanation. The version number includes the source code revision number. For example, in 6.0.123, the major version is 6, the minor version is 0 and the source code revision is 123.