The Lightning BEV has been discontinued. The Lightning will continue to be produced, after a delay, but it will only come as an EREV configuration. Ford has been mum on the details but my guess is it will share a large part of the underlying architecture with the pure BEV version. I won't be shocked if Ford backpedals at some point in a couple years and offers both variants simultaneously.

I'm not entirely convinced Ford would have discontinued the BEV if the F150 aluminum manufacturer hadn't caught on fire a few times over the space of a month or so. Ford really needs to go for maximum margin trucks when they cannot produce all that they want, so it made sense to put the Lightning BEV on indefinite hold.