This is great news.
Not because latias belongs in ubers, but because it finally means we'll see fewer scarftar, worse preparation for a lot of setup threats like DDanything and I can finally get off with my favorite base 115 Spe pokemon because scarftar doesn't **** them handily.
Did I mention I hate scarftar, whose usage will surely go down now that latias, one of its primary pursuit targets, is gone? =D
In general this means that teams will have to be more careful of opening themselves up for a sweep, infernape obviously benefits from it, but I'd also say salamence and kingdra benefit a lot from this just because their primary methods of setup can't be revenged short of more risky revengers like scarfed jirachi and flygon.