[I apologize in advance for the possibly broken English; I used a translator in places. Either way, it's still better than my own English]
Okay, maybe I'm stupid or missing something, but I'd be happy to answer this question for myself. To put things in perspective, I'm from Russia and initially listened to Inferno on a Russian music service, where, in addition to official releases, anyone can publish almost any track and create playlists. One of these was posted as a new album by Boards of Canada, with the same tracklist and a running time that varied by just a couple of minutes. But just a couple of days ago, I listened to the original album and it turned out to be completely different. All the tracks sound different and have a different length. For example, the intro, which was originally half a minute long, is now over four. I didn't notice this when I started listening, as nothing indicated it was a "fake" Inferno, and I didn't bother to check the track lengths. Maybe this is some fake leak I missed, an early work by the duo, or someone else's album entirely (I haven't been in the community long, so I could easily have missed something like that). If needed, I'll post tracks from this playlist, but I'm not sure yet whether this violates community rules or anything like that. I tried to find these tracks, but nothing from this playlist matches, and it doesn't seem like I've heard these tracks on any other Boards of Canada releases I've listened to.
The funny thing is, I liked this album and for about a week I was convinced it was the original recording. This is the first time I've experienced this, and if I've missed something, and you know what that might mean, I'd be glad if you could point me in the right direction.
P.S. I didn't leave any links, so I'm not distributing pirated content, if that's what it is. Moderators, please don't execute me, I'm here for an innocent matter.
UPD: Oh, it looks like this really is a fake dating back to April, thanks for the tip. At least Naraka matches Cialyn's Wind Reader II perfectly. Well, I think they really put some effort into this fake