It seems to indicate he counts the rest aspect of the Sabbath as fulfilled, but the day of worship aspect as binding. Either way, he rested on the day (as the thread Mr. Hicks linked above points out), but the distinction in views is still there. In my studies, I have seen little difference between his view of the Sabbath and that of the Augsburg Confession.
I am interested in seeing other comments on his meaning, though. 
-----Added 10/5/2009 at 09:33:45 EST-----
Hmm...the first sentence in your quote, Sarah, indicates that he is saying that the Mosaic Covenant added elements to the Sabbath, which in Calvin's view were temporal. He seems to be making the point that those added things, in his view, are fulfilled, while the day as instituted from creation continues. In other words, he seems to be saying that even though (in his view) the details added under the mosaic covenant (not in the decalogue, but in the applications later) are fulfilled, the day itself has reverted to its original form, although it has also been sanctified by Christ's resurrection.
Thoughts anyone?
Austin Williamson
Electrical engineering student at Texas State University
Member of Church of the Cross (PCA)
San Marcos, TX
Let us, then, as we would show ourselves to be godly, keep close to the rule of worship, and in the things of Jehovah go no further than we can say, 'It is written'.
~Rev. Thomas Watson, The Godly Man's Picture
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