Hi suat.cini,
The downloaded ISO file looks the same as ever, if you downloaded with MS Edge it adds the ADS SmartScreen:$DATA, which causes the file to be unblocked automatically on first mount.
If you do issue cmd dir /r it should show that the Zone.Identifier:$DATA has been remove after the first mount.
I really don't see any difference with the previous behavior.
I you download with a different browser, the file will not have SmartScreen:$DATA appended to it, in that case it may not unblock the file automatically.
This notepad command will show you the content of the Alternate Data Stream SmartScreen:
notepad Windows11_InsiderPreview_Client_x64_en-us__22000_194.iso:SmartScreen:$DATA
This other notepad command shows where the file is coming from:
notepad Windows11_InsiderPreview_Client_x64_en-us__22000_194.iso:Zone.Identifier:$DATA
The Zone.Identifier:$DATA is removed after the first mount, after that all the subsequent Mounts are immediate.