FYI, it's always been available in their integrated plugin list since v2.0 (2015)
Have you ever used it?
I don't think I ever tried any Electrum wallet plugins.
Nah, I don't need anything "
safer" than flash drive or QR Code for PSBT and finalized transaction data transfer.
The information about the version where its implemented is based from this commit which was merged in v2.0-beta;
link:
github.com/spesmilo/electrum/commit/04fc3d4135f82b7c6aaea6437b243a43a39f381c