The user had a use case where he needs a Camera FoV of 0.1, but 1 is the minimum allowed value right now. In Unity 2.6, FOV was not limited. Probably this is by design, but I'm not sure why.

We won't fix this since the value is still settable to < 1 FOV (through API or animation). The UI does not allow this, but I believe this is desirable in most cases.