The gimpusers.com site has a preview of new features
in the upcoming GIMP 2.8 release. "It's now possible to group layers into folders in a tree-like way. You can move and show/hide all layers of a group at once so it will finally be possible to create complex layouts without getting lost. The layer sets don't work perfectly, since layer masks don't work yet for example. Nevertheless the basic behaviour works quite well already!
" 16-bit image depth is not on the list, unfortunately.
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