From the webpage:
Data Dumps are a downloadable version of the data in Freebase. They constitute a snapshot of the data stored in Freebase and the Schema that structures it, and are provided under the same CC-BY license.
Full data dumps of every fact and assertion in Freebase are available as RDF and are updated every week. Deltas are not available at this time.
Total triples: 585 million
Compressed size: 14 GB
Uncompressed size: 87 GB
Data Format: Turtle RDF
I first saw this in a tweet by Thomas Steiner.