This was really exciting to read. The ability to seamlessly integrate with the OS. We already do it with SSHFS and NFS; but bringing Dropbox's sync, versioning, and offline caching would be great.
Then I saw that it's not available on Linux. Which is really surprising, since supporting arbitrary filesystems is IMO dead-easy on Linux, and the easiest of the three desktop OSes. And since our company uses only Linux workstations (except for the designers), this is immediately unavailable to us. This is disheartening.
Yea I was waiting to see if they were going to talk about Linux in the video. They didn't.
This is low level enough that it'd have to be implemented as a FUSE layer, which could add quite a bit of complexity. I wonder how they're going to deal with Linux. Will it still just sync everything?