This brief article (in English) is followed by a slightly more informative article in Spanish. It’s not certain how big this news is yet. It looks like the manuscripts are mostly of Ovid’s Metamorphoses. This is possibly at least somewhat frustrating news for the editors of the most recent critical editions of that text, though I’m sure they rejoice along with everyone else at the possibility of a fuller perspective on this poem. As some have already commented, what would be truly wonderful is if Ovid’s Medea, his lost work (and sole experiment with the genre of tragedy) were to be in the trove. That, however, is probably too much to hope for… The link is here.
I am salivating. Goes to show that you should never throw away old papers!