Nap?

Maybe.  Maybe not.  The best way to tell is to look at the in-process betas for the watch. If it's in the beta cycle, it's usually going to be on the official release.  https://forums.garmin.com/beta-program/instinct-2-series/f/announcement   I just took a look and don't see it though.  It is planned for the Epix/Fenix 7 family.  But in looking at the beta tester posts for those models, it's a bit flakey now.

Newer Forerunners (e.g. 255) have it implemented in official builds, so not a beta feature any longer

My Instinct 2 is tracking naps in relation to body battery metric even without enabling sleep mode..

Thanks for the replies , obviously it won't be for version 4.11 but hopefully for next update!

can you tell me how you set it without sleep mode? Thanks for the info

Is there anything new about nap?

No

Given the version 15.x beta cycle got underway with no mentions of the nap feature, I am getting increasingly skeptical about whether it will come to the Instinct family.

apparently it will not have this useful function at all