When would Airport support SMB v2?

We are all a bit amazed that Time Capsule or Airport Extreme with USB hard disk have not been upgraded for so long. But nor has Apple updated the airport utility since win7.. which inclines me to think they consider Windows world pretty much out of their interest.

What is more.. Apple swapped to SMB at Mavericks as the default protocol.. but backups to Time Capsule for example still use AFP.. even on the latest High Sierra.. There was lots of discussion about using SMB now for Time Machine.. but it is only used when you have a non-apple network target.. like Synology NAS.

Buy a small NAS.. it is hugely faster and safer than using Apple routers from windows or any other product for that matter except a Mac Computer. The problem exists in most of the iOS apps to gain access to network files.. eg file browser.

You have posted your question on a user-to-user support forum, where we are all users.....just like you.

No one here will have any idea what a secretive company like Apple might do, or when they might do it.

Tell Apple what you would like to see here:

Feedback - AirPort Extreme - Apple

Beside of switching the risky SMBv1 on, is there any other possible way I could connect the Airport? Say SMBv2, SMBv3?

At present, no. I confirmed, by doing a data capture, that the file server service provided by the AirPort Extreme or Time Capsule base stations only supports the NT LAN Manager (NT LM 0.12) dialect (aka, SMB1) file sharing protocol ... regardless of the SMB dialects supported by the client. That was true for macOS, Windows, or Linux clients.