Haage & Partner did "3.5" and "3.9". Those are no longer distributed, as the contracts with both Amiga and the developers/suppliers expired.
Cloanto (Amiga Forever) did "3.X", which is currently at v. 45.066, or 45.66. It is based on 40.068 by the Amiga companies, not work by Haage & Partner: https://www.amigaforever.com/kb/16-125
This update wasn't really "unexpected", as there have been patches and updates for AmigaOS 3.x from various sources (not just Hyperion Entertainment) every few years.
Hyperion is operating while insolvent and has failed to file nine years' worth of accounts (2009-2014 and 2022-2024). Yet - perhaps because of that - they still found the resources to sue Amiga in 2018 in an attempt to seize its assets (https://x.com/amigadocuments/status/1897157746019196951).
The developers behind AmigaOS 3.2.3 are working for free, while Hyperion simply slaps its name on the box and the proceeds are being funneled into the lawsuit against Amiga.
For anyone who actually cares about the platform, it's as disheartening as it is infuriating.
On your site it says "The calendar data can come from one or more calendar providers". Is the connection direct (e.g. data flows from Google to epaper calendar), or via the app installed on the user's phone, or does it need your servers in-between?
https://news.ycombinator.com/item?id=43670238