LDX had an application rejected by the FDA for their FebriDx and...

LDX had an application rejected by the FDA for their FebriDx and their share price dropped from over $1.00 to copper coin territory. In July this year, seemingly out of the blue, the FDA approved the same device. No fanfare on HC, no rocket ships, no future price polls, nobody seemed to know much about the re-submission. I'm actually struggling to find any announcements relating to it. This is an excerpt from an announcement last year after the rejection
" For the time being, Lumos does not intend to further invest in activities directed towards securing US clearance for FebriDx."
Heard little more about it until budda-bing, they got approval. I would've thought a re-submission would've required an announcement, maybe I've missed it.