I know it is rare and drops are random, but have not got bone in quite some time. Is it just bad luck lately or has bone changed as a drop for just wolves?
Nothing has been changed. Looks like just a stroke of bad luck your end:
Huntable Animals Loot Chances
And that reminds me, I need to add a use for deer carcass to butchering. Or have I already.
lol giving us a hint of update?
Already done. There an announcement post and a group notice. You can now use the deer carcass to make venison cuts.