The 160 is for the 1-10" twist and is a semi-spitzer. I would like to see a 165+ grain spitzer Partition or maybe a Ballistic Tip.
Time will tell.
170 NBT has already been pictured in some of the release photos
That is a 175 grain Sierra Game King.
A 170gr Ballistic Silver Tip is also one of the initial load offerings from Winchester.
Don't understand how folks can whine about this new chambering, it's basically exactly what the .270 WSM should have been.... 8 twist and the first three factory loads are 165gr ABLR, 170gr BT, and 175gr TGK? That'll do pig, that'll do.