LinuxDay.AT 2019, Dornbirn, Austria - no date yet, no CfP yet
X2Go: The Gathering 2019, Linuxhotel, Essen, Germany - TBD - maybe May/June? More likely Q3, due to h1' schedule - Motto suggestion: Return to Villa Vogelsang
TUEBIX 2019, Tübingen, Germany, 2019-07-06 - no CfP yet
Linuxwochen Wien 2019, Vienna, Austria, 2019-05-02 - 2019-05-04 (CfP sent, waiting for reply), Volunteers: Stefan#1, Franz
LinuxInfoTag Augsburg 2019, Augsburg, Germany - 2019-04-06 - CfP deadline: 2019-03-24 (https://frab.luga.de/en/LIT2019/cfp/) - Volunteers most likely h1 & Stefan1, possibly more - Not enough volunteers. :'(
Linux Expo Ulm 2019, Ulm, Germany - if it takes place at all