Lineage OS' downloads are still empty for OPO, but I managed to get the file and it's already avaliable to dowload.
I've done nothing but finding the link, based on other device's link structure.
Here you go:
I have not tested it, it might not work, I just leave the link for you!!
Maybe they contain bugs and thats why Lineage hasn't still officially released it.
This is how the Lineage web looks at the time of publishing this post:
But we already got the file!!