Update: Although Nintendo have not announced anything officially, speaking to Eurogamer today, it was confirmed as "real", but there is nothing to announce yet.
Original story:
First shown off many moons ago at E3, and given a vague release date of this Summer, Nintendo's FlingSmash didn't turn up on the doorstep of stores or sellers anywhere. A possible reason for this delay, and what will do doubt be a key selling attribute, may have been unwittedly given in a Gamestop boxart update;
The image is a little blurry, but the asthetics of the sole Wii Remote look to be the same, with a curved bit of writing on the bottom to signify the Motionplus ability built in. The image has been taken down from the Gamestop listing, which might say that this Remote could have been one of Nintendo's announcements on the 29th this month.
No word has been given on whether this bundle will make it across other continents, but with FlingSmash requiring the add-on, as Wii Sports Resort did before it, it looks likely.