Yes, absolutely, it's coming. The app already works on Mac and Linux.
The first feature of this app ever was in Madeira, where I demoed with nostr:npub1ye5ptcxfyyxl5vjvdjar2ua3f0hynkjzpx552mu5snj3qmx5pzjscpknpr and nostr:npub1lunaq893u4hmtpvqxpk8hfmtkqmm7ggutdtnc4hyuux2skr4ttcqr827lj the download/verification/install of a zipped PWA file, so that is coming too
(That's when the application/pwa+zip mime type was born)