I had reported that Post Labels in RC2 were displaying from high to low in terms of the ID number in both the o-body section where currently the Post Label is assigned, and also in the filter box when the admin toolbar with filters is active.
RC3 has not addressed this issue, so I am reporting it again.
This should logically be sorted from low to high ID numbers IMO.
(OR, better yet, Post Labels should be sortable in sort order on the Admin back end, like Post Types, but I assume that is out of scope for now)
I report this because Post Priority most certainly does show in low to high ID sort order, meaning 1, 2, 3 - Low, Normal Critical from the default installation.
I want these Post Labels to display in a certain order, and it is more intuitive that they at least are displayed on the front end in low-to-high ID order for now, as they are not "sortable" on the admin side.