I searched in the Errata and here in the forum and I didn't found anything that this card is a missprint. But for me it seems a little weird, that such a good card gives the User a yellow dice. At first I was sure this is a missprint, because the yellow dice of ambush (conservative side of the card) makes perfectly sence, but as I said, my research didn't help.

Is this card really meant to give this yellow dice to a very good melee attack?

You can always ask FFG directly via the Rules Questions page.