Apparently coming 7th June, but Gigathlon starts on the 10th so may be then since that’s a huge race sponsored by Suunto.
This may be the “Ambit 4” we’ve been waiting for coming this year! Suunto have gone a little fruity with their names recently so it’s plausible they might move away from Ambit. This watch looks pretty good as a competitor hardware to Fenix 3 and Garmin don’t seem to have anything new coming feature wise judging by the 735xt which is basically a smaller lighter Fenix 3 and added very little functionality. That’s not a bad thing, we may just have hit the end of useful additions to these watches.
Edit – ooh it’s real! FCC page
One thing that’s notable is the holes on the left side, this could be the altimeter but that’s usually one small hole. As I mentioned recently Suunto may be launching a dive/activity watch and this would make sense with that hole pattern. The 10ATM/100m water resistance would suggest this isn’t a dive watch though unfortunately.