The final smash direct will be in or around mid November. The anniversary of release dates for Smash 64 are the 15th & 19th, Melee is the 21st, Smash 4(Wii U) is also on the 21st as well as the 28th & 29th of November in other regions. People may not have noticed but Isabelle’s reveal & the Nintendo direct were originally scheduled a week before the anniversary of Smash 4(3DS) on September 13th, which was pushed back a week due to the earthquakes. The same thing could be done for the anniversaries of these games. Another November sign is the Smash bundle coming out on the 2nd. The specific date I think the direct can be on is November 8th. This is due to all the directs being in the early or mid part of their month. 3/4 of them were on a Thursday(the one that wasn’t was close, on a Wednesday) & 2/4 of them were on the 8th. & what day does November “8th” fall on? Yes a Thursday. This would be when a downloadable demo would be announced, if there is one. It could be playable as soon as the direct is over or closer to Ultimate’s release.
The original Golden Sun(11th in NA) & Dark Dawn(29th in NA), as well as Shadow the Hedgehog(15th in NA, 18th in PAL) were all released in mid November(10th to the 20th), besides Dark Dawn, strengthening the November part. This would be perfect for the reveals of Isaac and Shadow as their games would be having their anniversaries. Then there’s echo fighters. The most likely ones are Ken and Dixie Kong(Even Ken & Dixie Kong could be getting the anniversary treatment as Street Fighter games have been ported and/or enhanced in November as well as her debut game & many other Donkey Kong games were released in November). They were requested for years, seen in polls, used by Sakurai (Shadow & Isaac are assist trophies & trophies in Brawl & again with Shadow in Smash 4, Ken as a trophy in 4 & Dixie Kong was planned to be paired with Diddy Kong in Brawl & has a trophy in every one since Melee). One of the possible echoes might be a semi-clone, most likely Shadow, since most people saw Isabelle getting in as an echo but that was false. 4 is the min characters we could get with 7 being the max for several reasons such as it stays beneath the base amount of newcomers in Smash 4.
These characters are in numerous theories, such as box theory having Ken and while people believed the final spot belongs to Incineroar it could belong to any non echo fighter newcomer which works for Isaac and Shadow. Also the blog theory works for 4 to 7 characters. There’s various leaks plenty of which have these characters in them, but the most popular one has Ken. If my characters from before are right then 1 stage would have to be new for Isaac. The total amount of stages is a difficult factor. There’s the CoroCoro 5 more for a total of 108 idea and I can see that’s a possibility with 5 more spots remaining on the stage selection screen with the last belonging to custom stages, maybe even DLC. This would mean 4 other stages are left all of which are could be returning, new or a combination. A new row of stages could be added so 5 is only the minimum.
The structure of the direct could even go like... A hero is being shown first, most likely Isaac, then echoes in the middle and a villain last, probably Shadow with Sonic in his reveal. This was the pattern set by the July & August direct. To conclude in or slightly around mid November is when there will be a direct with the reveal of a demo, at least 5 stages and 4 to 7 new characters. There other facts that weren’t listed in order to keep this short as can be and ideas on what else we could get but they are more personal than factual as there is a lack of evidence for them. Parts in this theory of course could be somewhat different to totally wrong from what’ll actually happen, but until then, wait and watch