If you're looking for old unplayed wild cards that will suddenly warp the meta in a signficant way and outshine the current top-tier wild cards, then probably not, it happens once in a while though.
If you're looking for old unplayed wild cards that become more viable or interesting cards due to new synergy being introduced then yes, it happens all the time, every expansion in fact. It's the very reason why wild exists in the first place, with so many cards there is an ever growing critical mass of synergy and you can't balance it properly.
In Wild there is the meta, and there are all the other thousand decks that are worse than the meta but still viable, because card quality and synergy is so high that you can win any game assuming it's not an unwinnable matchup (meme combo deck vs face aggro)
In standard you have the meta and that's it.
There's no way around the meta, but Wild gives you a chance not to joint it, even if you can't beat it.