I am from the team organizing the workshop in Freiburg together with Furtwangen university, and I did not dare to give any post for the last autumn and winter ... always hoping and hoping and hoping ... .
Now situation really clearly improves as some vaccines really seem to work nicely and even surprinsingly nicely... and the vaccination data from GB and Israel really look encouraging I think. But central Europe is still only at about 10%-20% vaccination rate and will need at least 1-2 months to reach the 50% of GB and Isreal... and now unfortuantely central Europe still fully within 3rd wave, as it looks like, so currently I think no sense to hope for our October 2021 date. International traveling is slowly coming back now, at least for important business travel, but still with very cumbersome visa and testing requirments (not to speak of some important countries still requiring several days quarantine, which of course would be completely out of discussion for such an event...).
But we from the organizing team are looking very much forward now to Oct 2022, hopefully "Long waiting will be rewarded".
Concerning on-line conference I am the completely wrong guy, please excuse... . I well know teachers who currently do this online courses at schools or universities - of course in these cases much better than nothing, but there are already enough problems with 10-20 people, and I cannot really imagine how this should give fruitful and nice and fast and efficient opionion exchanges if there are 50 or more participants, especially if the participants do not know each other very well... . So I personally prefer to be happy with the old-style written forum for this... (this Lua-I nabble here I like very much).
... but if some other people want to organize some online event, I will in no way oppose it or feel bad about it, please feel free to step forward in this case... .
I hope ok - please excuse that I cannot give a more nice post for now...