at some point sure, but not soon unless you try it yourself
see the desktop repo for instructions https://github.com/deltachat/deltachat-desktop#from-source
you need rustup installed on you pi and it will take long to compile.
In essence you need:
install rustup and build-essential on your pi, then run following commands:
$ git clone https://github.com/deltachat/deltachat-desktop.git
$ cd deltachat-desktop
$ npm install
$ npm run build
when done and there was no error run npm run start to start it, if there was an error or you got other questions please let know in this forum thread.
Electron apps take many resources, so we also plan on developing a more native interface:Are there any native linux desktop apps in the works?