THEMA:

offizielle RoadMap (wann ist was geplant)
developer.joomla.org/roadmap.html#4

George Wilson, (Release Lead von Joomla 4)
volunteers.joomla.org/joomlers/160-george-wilson

Was gibts Neues in Joomla! 4.0
en: www.joomladevs.com/blog/79-what-is-new-in-joomla-4
de: www.redim.de/joomla-ratgeber/joomla-4
fr: www.joomla.fr/actualites/joomla-4-0-en-v...able-est-en-approche
it: www.joomla.it/notizie/9062-webinar-alla-...rta-di-joomla-4.html

Joomla! 4 Tutorials (Anleitungen)
en: docs.joomla.org/JDOC:Joomla_4_Tutorials_Project
de: docs.joomla.org/JDOC:Joomla_4_Tutorials_Project/de
fr: docs.joomla.org/JDOC:Joomla_4_Tutorials_Project/fr
it: docs.joomla.org/JDOC:Joomla_4_Tutorials_Project/it

Technische Voraussetzungen (aktuell noch 7.4.# empfohlen)
downloads.joomla.org/technical-requirements

Rückwärtskompatibilität (mögliche Probleme)
de: docs.joomla.org/Potential_backward_compa...ssues_in_Joomla_4/de
en: docs.joomla.org/Potential_backward_compa...ssues_in_Joomla_4/en
fr: docs.joomla.org/Potential_backward_compa...ssues_in_Joomla_4/fr

Release News Joomla4 (wird laufend aktualisiert)
en: www.joomla.org/announcements/release-new...la-3-10-alpha-6.html
de: www.joomla.de/news/joomla/735-joomla-4-r...ha-6-veroeffentlicht
fr: www.joomla.fr/actualites/joomla-4-rc-1-et-joomla-3-10-alpha-6
it: www.joomla.it/notizie/9090-joomla-4-0-rc...la-3-10-alpha-6.html

Joomla 4 RC Installationspaket (Download)
github.com/joomla/joomla-cms/releases/tag/4.0.0-rc1
developer.joomla.org/nightlies/Joomla_4....ent-Full_Package.zip
developer.joomla.org/nightlies/Joomla_4....t-Update_Package.zip

Joomla 4 Beta Nightly Builds Installationspaket (Download)
developer.joomla.org/nightly-builds.html

Joomla! Issue Tracker (Bugs und Issues melden)
issues.joomla.org/tracker/joomla-cms

Das deutsche Übersetzungsteam für Joomla (Core) auf Github
github.com/joomlagerman/joomla/issues 

Was macht Joomla! 3.10 (der Update Checker, noch in Arbeit, aktuell Alpha 5)
de: www.joomla.de/news/joomla/681-joomla-3-1...d-der-update-checker
en: docs.joomla.org/Portal:Upgrading_Version....x_.28in_progress.29
en: github.com/joomla/joomla-cms/releases/tag/3.10.0-alpha6 

Bootstrap 5.#.#?!
en: blog.getbootstrap.com/
en: getbootstrap.com/docs/5.0/getting-started/introduction/