Originally posted by Nimono
The amiibo's not for Smash, as far as I can tell- even the deleted tweet showed that the amiibo was "Shovel Knight" series instead of "Super Smash Bros" series. I don't think Shovel Knight will be in- at least, not yet. The ballot's still not over yet.
There are still some points to him being in smash. Such as the concept art for the Amiibo having a Smash Bros. series trophy base (although maybe the concept artist made a mistake an thought every amiibo had the Smash Bros. base.). Also Tamaki, the person who had the initial sources reaffirms he will come to Smash (linked to the first thought, maybe his source saw the concept art and concluded he would be in Smash). And finally, we got a Smash Bros. online maintenance for both versions coming tomorrow. Not entirely sure if they did maintenance before any other major updates before, though. They did for the last one.
However, if Shovel Knight is real, then that would mean the characters from the ballot have been worked on for some time now. It would be even more weird if they release him at the same time they're announced like Roy and Ryu, too. Unless he is not considered from the ballot. Shady...
Speaking of speculation, some days ago another rumor popped out about Layton being in, too. His voice actor may had accidentally confirmed it, but he could have been joking. Later clarified that Nintendo would know before he did.
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We might not be getting new DLC, but maybe just a simple balance patch or a something like a fixed tourny mode. In fact, the most likely thing that will happen is nothing at all. Just maintenance.