About Apple Silicon ("M1") Macs
Apple is now selling devices based on their ARM based M1 chip. M1 chips are not compatible with the Intel based chips that Apple has been using for a few years now. That implies that the operating system and applications needs to be ported to the new architecture.
Apple has already ported the OS, and many applications have been ported, but not all. Apps that have not been ported can be run via a compatibility layer called 'Rosetta 2', provided by Apple. Unfortunately Apple has decided not to ship Rosetta 2 directly with the OS, so users have to install it manually by running 'sudo /usr/sbin/softwareupdate --install-rosetta'. Even more unfortunate is the fact that Apple has decided that Rosetta 2 needs to be installed again after every OS update.
ESET Anti-virus for M1 based Macs is available in the Self-Service since April 7th, 2021. Due to a bug (in ESET or in macOS for M1) M1 based Macs need to be restarted twice after installing a macOS update to make ESET function properly.
Parallels Desktop 16.5 is now available for M1 based Macs. It will only allow creation of the arm64 based windows or linux versions. Windows for arm64 is still in beta. Future availibility of applications for arm64 windows is still unknown. Creating virtual Macs is not yet supported in Parallels Desktop for M1 based Macs. If you plan to run VMs on your Mac you should not go for M1 based models. Most likely your existing VMs created on Intel Macs will not work on M1 based Macs.
Mounting dfs via Webdav
With macOS versions below 11.3 M1 Macs froze when trying to modify files residing in DFS mounted via webdav (https://dfs.cern.ch/...).
Most actions from the Self-Service will fail if Rosetta 2 is not installed already. The installation of Rosetta 2 can be triggered via the Self-Service.
XQuartz 2.8.1 is supposed to work natively on ARM based Macs, but there are many known problems.