qBittorrent official forums

I would like to have a 64-bit version of your great software.
Is it possible? (in the near future)

You can run the 64-bit in portable mode. That is how I'm currently using it.
I'm using 4.3.9

I downloaded posibly 64-bit version from here: https://www.x64bitdownload.com/download ... amwdy.html
How to upgrade from 32-bit to 64-bit, without losing torrents?

It is still 32-bit.
Where to find 64-bit version?

Look here.
https://github.com/qbittorrent/qBittorr ... table-mode
It's able to run "portable" natively. I'm not going to be much help with how to import the torrents into another install.
I had to use 7zip to extract the x64 version.