I do not see any change either -
WT 2009 3/15 p12
"God’s Word also says that “scrolls [will be] opened,” indicating that those living at that time will be given new information. (Rev. 20:12) As the earth is transformed into a paradise, “righteousness is what the inhabitants of the productive land will certainly learn.”—Isa. 26:9.
9 The resurrected ones will be judged, not on the basis of sin inherited from Adam, but by what they themselves choose to do. Revelation 20:12 says: “The dead were judged out of those things written in the scrolls according to their deeds,” that is, their deeds following their resurrection. What a marvelous example of Jehovah’s justice, mercy, and love!"
In this article the word "new" is omitted, but it is a very brief comment. It does not say that they are not new scrolls, and they are to be revealed in the future
I think it is just sloppy writing, not a deliberate change.