Nintendo España has, unsurprisingly, now informed Nintenderos that this press release was in error; we've also received a similar message after enquiring on this with Nintendo UK. As suggested below there have been instances like this out of Nintendo's Spanish divisions in the recent past, so we'll see what transpires in the coming weeks.
Not too long ago we told you about speculation that surfaced thanks to the launch of the Japanese website for Mario Party 10 - information pages on amiibo features included rendered images suggesting there'll be Super Mario amiibo toys for Rosalina, Donkey Kong and Wario. It seems like a logical release, and is of particular interest for those that have had a hard time buying a Smash Bros. series Rosalina toy.
We seem to be a big step closer to these being more than concepts on a product page, however, with a press release sent by Nintendo España / Spain - shared with us by Nintenderos - citing the figures as upcoming Super Mario amiibo. First of all, those renders from the Japanese website are below, for reference.
Below is a (poorly) translated section from the press release - note that Rosalina is known as Estela in Spain.
From the collection of Super Smash Bros., now on sale, you can play with amiibo Mario, Peach, Yoshi, Luigi and Bowser. What have not you done with them and not find them anywhere? The March 20 comes a new collection of ad hoc amiibo made for Mario Party 10: Super Mario Collection, which includes new amiibo Mario, Luigi, Peach, Toad, Yoshi, Bowser, Estela, Donkey Kong and Wario.
Nintendo Spain and its departments have 'previous' with leaking details, with the Official Nintendo Magazine in the country outlining a September release for Super Smash Bros. on 3DS when, at the time, the party-line was a 'Summer' window. That was almost right, with the game eventually landing in Japan during September last year and hitting the West on 3rd October.
This could be Nintendo Spain getting its wires crossed or inadvertently confirming the rumours when it shouldn't be. It does seem that the odds of these three amiibo being a reality just shortened.
Thanks to Oscar for getting in touch.