So far, we have seen anecdotal reports of:
1) People who had problems after updating the firmware, and had to reset/reconfigure their device to make it work.
2) People who had problems, but had to disable the new feature, even though they use a compatible service provider.
3) People who had problems, and had to downgrade, because both 1) and 2) didn't work.
4) People who reported the new feature works properly.
This diverse array of behaviour is astonishing.