The Hetamyu actors for Italy, Germany, and Japan have been posting updates for the most recent screening and stage greetings! Here are some of the photos from each of their Twitters (In order: Italy, Japan, and Germany)!
In news of this occasion, he will be reading Volume 8 live on stream on March 7th, at 9:00 pm JST on his Youtube channel!
If you are interested in tuning in to his stream, please be mindful of the date and timezones to ensure you don't miss it! Please be respectful during Ueda's livestream.
I have recently been watching the Hetalia musicals, I found recordings of the first 4, the third one (the new world) only had Chinese subtitles so, (with the help of Google translate), I made a very rough subtitle file for it which I thought I would post here just in case anyone is interested.
Here is the link for it, please don't re-post elsewhere, thanks
Edit:
I have also made a subtitle file for Hetalia the World is Wonderful and added it to the folder. Again it's very rough but you get the general idea of what's happening