It's not unusual, but I too am of the opinion that it's often awkward and redundant, as in both your examples. It's fine to use the passive tense with "expect", but there's no need to push it into the future:
It is expected to rain tomorrow.
Society may change, but gender roles aren't expected to change with it.
The only time this ever makes sense is if it is reasonable to push the expectation itself into the future. This must be supported by context:
Agriculture will always be the foundation of a healthy society. Centuries from now, meals will be expected to arrive on time to feed hungry future generations, no matter what their original source.
I still prefer the active voice:
Centuries from now, hungry future generations will expect their meals to arrive on time, no matter what their original source.
but I've forced it into the passive to make it similar to your examples.