Ok, so I just got the latest update decrypted, and I think I have some news which might be rather interesting.

First things first, new sounds. In /romfs/sound/bgm we have a slew of new sounds (and some old ones from prior updates since each update overwrites the other). The list is:
•snd_bgm_F27_AIR_MoriStage_3DS.nus3bank
•snd_bgm_H12_BW_Sentou_Zekrom_Reshiram_3DS.nus3bank
•snd_bgm_SF01_SF2_Ryu_3DS.nus3bank
•snd_bgm_T09_SDX_PupupuLand_3DS.nus3bank
•snd_bgm_V01_PAC_PacMan_3DS.nus3bank
•snd_bgm_Z80_F_Mewtwo_3DS.nus3bank
•snd_bgm_Z81_F_Ryu_3DS.nus3bank
•snd_bgm_Z82_F_Lucas_3DS.nus3bank
•snd_bgm_Z83_F_Roy_3DS.nus3bank

Now obviously the biggest sticklers are Ryu, Mewtwo, Roy, and Lucas. Not sure who Ryu is (although if anyone does know, please tell),. However, Roy most intrigued me. Did they update the koopa kid’s sound for some reason? Or is there more?

So I converted the 4 sounds which most stuck out to me:
•snd_bgm_SF01_SF2_Ryu_3DS
•snd_bgm_Z81_F_Ryu_3DS
•snd_bgm_Z82_F_Lucas_3DS
•snd_bgm_Z83_F_Roy_3DS

Most of these are victory screens, all but the first Ryu sound file which seems to be a new stage. Now here’s the kicker: Roy’s victory theme is the Fire Emblem victory theme.

Yes, we’re getting Roy back guys!

I’ll continue exploring around if I can, it’s a bit late here unfortunately and I might not be back for a while though.

EDIT: I just looked into it, apparently Ryu is from Street Fighter

EDIT 2: Went ahead and ran a file listing on every updated file (although, granted, this also includes every update from before 1.06), txt file is here. Nothing too special, wouldn’t run to any conclusions from just a file list.

EDIT 3: Just to clarify, this is from a 3DS decryption, not Wii U. No idea what’s in the Wii U files, and I don’t have a Wii U to verify that.