Dear community,
The time has come and IntelMQ 3.0 is final! We, as community,
      made loads of changes, smaller and bigger ones, and I really think
      that IntelMQ became more user-friendly, developer-friendly and
      feature-rich at the same time!
    
There are some major changes in this release, especially the in the field of the configuration and Internal Data format (previously: "harmonization"). For the configuration-part, the upgrade part should be automatic with `intelmqctl upgrade-config` as usual. For the Data format, carefully look at your bot configurations (filters, sieve, etc.) to update them. Adaptions in systems connected to IntelMQ, especially also databases might be necessary as well. The NEWS.md file give a summary of what has changed: https://github.com/certtools/intelmq/blob/maintenance/NEWS.md#user-content-300-major-release-2021-07-02
We don't recommend to upgrade existing production instance of
      IntelMQ yet. We of course did testing, including the end-to-end
      tests, and have detailed release notes. But for critical systems,
      a delayed upgrade makes sense ;)
      Therefore the stable deb/rpm repositories don't contain the 3.0
      release yet! Even though an upgrade of production systems is not
      yet recommended, extensive usage and testing of the new releases
      are very much welcome and required to get the necessary feedback
      for the next (maintenance) releases.
    
The releases are available via git, PyPI, Docker and the
      *unstable* deb/rpm repositories.
    
Installation documentation:
      https://intelmq.readthedocs.io/en/maintenance/user/installation.html
      Upgrade documentation:
      https://intelmq.readthedocs.io/en/maintenance/user/upgrade.html
      IntelMQ API documentation:
      https://intelmq.readthedocs.io/en/maintenance/user/intelmq-api.html
      IntelMQ Manager documentation:
      https://intelmq.readthedocs.io/en/maintenance/user/intelmq-manager.html
    
NEWS/release notes of IntelMQ (Core):
https://github.com/certtools/intelmq/blob/maintenance/NEWS.md#user-content-300-major-release-2021-07-02
      Full Changelog of IntelMQ (Core):
https://github.com/certtools/intelmq/blob/maintenance/CHANGELOG.md#300-2021-07-02
On a high level, these are the major changes compared to version 2.3.x (2.3.3 was released 2021-05-31):
In the core and Docker:
    
New and majorly enhanced bots:
    
intelmq.bots.collectors.fireeye: A bot
        that collects indicators from Fireeye MAS appliances (PR#1745 by
        Christopher Schappelwein).intelmq.bots.collectors.api.collector_api: Added
        UNIX socket capability (PR#1987 by Mikk Margus Möll, fixes
        #1986).intelmq.bots.parsers.fireeye: A bot that
        parses hashes and URLs from Fireeye MAS indicators (PR#1745 by
        Christopher Schappelwein).intelmq.bots.experts.http.expert_status: A
        bot that fetches the HTTP Status for a given URI and adds it to
        the message (PR#1789 by Birger Schacht, fixes #1047 partly).intelmq.bots.experts.http.expert_content:
        A bot that fetches an HTTP resource and checks if it contains a
        specific string (PR#1811 by Birger Schacht).intelmq.bots.experts.lookyloo.expert: A
        bot that sends requests to a lookyloo instance & adds screenshot_url
        to the event (PR#1844 by Sebastian Waldbauer, fixes #1048).intelmq.bots.experts.rdap.expert: A bot
        that checks the RDAP protocol for an abuse contact for a given
        domain (PR#1881 by Sebastian Waldbauer and Sebastian Wagner).intelmq.bots.experts.sieve.expert: Major
        refactoring and lot's of new functionality New operators for
        working with various types (lists, sets, booleans, float, int),
        generic rule negation and nesting (PR#1895 by Mikk Margus Möll).intelmq.bots.experts.uwhoisd: A bot that
        fetches the whois entry from a uwhois-instance (PR#1918 by
        Raphaël Vinot).intelmq.bots.experts.aggregate: A bot that
        aggregate events based upon given fields & a timespan.
        (PR#1959 by Sebastian Waldbauer)intelmq.bots.experts.tuency: A bot that
        queries the IntelMQ API of a tuency instance (PR#1857 by
        Sebastian Wagner, fixes #1856).intelmq.bots.outputs.templated_smtp
        (PR#1901 by Karl-Johan Karlsson).On the documentation front, these are the most important changes
    
And not to forget all the smaller changes and additions.
Thanks to (in random order)
    
Raphaël Vinot (circl.lu)
      Bernhard Reiter (intevation.de)
      Sebastian Wagner (CERT.AT)
      Filip Pokorný (CSIRT.CZ)
      Guillaume GRANJON de LÉPINEY (CERT XLM excellium-services.com)
      Mikk Margus Möll (CERT.ee)
      Alex Kaplan
      Thomas Hungenberg (CERT-BUND.DE)
      Einar Lanfranco (CERT-UNLP cert.unlp.edu.ar)
      Christopher Schappelwein (milCERT, BMLV.gv.at)
      Marcos Gonzalez (CSIRT-RD cncs.gob.do/csirt-rd/)
      Marius Karotkis (NRDCS.LT)
      Sebastian Waldbauer (CERT.AT)
      Jeremias Pretto (CERT-UNLP cert.unlp.edu.ar)
      Karl-Johan Karlsson (Linköping University LIU.SE)
      Birger Schacht (CERT.AT)
    
... and all the contributors of previous releases and as well to all reporters, supporters, etc!
best regards
      Sebastian
    
-- // Sebastian Wagner <wagner@cert.at> - T: +43 676 898 298 7201 // CERT Austria - https://www.cert.at/ // Eine Initiative der nic.at GmbH - https://www.nic.at/ // Firmenbuchnummer 172568b, LG Salzburg