I last took the Dec 2003 test. Results game out on Wed Dec. 31 instead of the published date Monday 1/5/2004. The update box says 1/5/2004.
FWIW I just double checked my LSAC.... for anyone who still cares I took the Sep 06 LSAT. The score release date box gives a date of 10/20/06, the friday before, but the "update" box still has the original published date of 10/23/06.
Remember, though, that the "score email date" didn't actually say 10/20 until the day of 10/20. It said 10/23 the whole time previously.
This was a cruel trick for this round of test-takers