Hoi,
It is an assumption that Wikidata will not expect data from Freebase. It has not been discussed, it may be correct. However, there are many really important reasons why we should seriously consider the offer of accepting much data from Freebase for inclusion in Wikidata.
The most important reason is that our aim is to share in the sum of all knowledge. I am not convinced at all that the data in Freebase is of a lesser quality than Wikidata. If it is of the same quality or better, we deny our users this wealth of information. Now who wants to seriously accept that argument.
Google throws its weight behind the tooling of sourcing statements. This means that it is not abandoning the data in Freebase. It is not abandoning structured data at all. It wants better data, more data and Wikidata is the place for it..
I am extremely happy with this news but I do not accept the idea that we should not accept Freebase data without some proper discussion and soul searching.
Remember: perfection is the enemy of the good.
Thanks,
GerardM