Investors & landlords

Related to this question, can any one help me figure out 

>Is this case is applied to the property which is owned by both taxpayer and spouse before spouse's death?

FMV on death or alternate value in 6 months could count for new service and depreciation on that property

>So in the future if surviving spouse sold the property, what happened the recovered prior depreciation of the property before spouse's death? Irrelevant ?

Any shared information  would be appreciated