But they hadn't conducted a full review, had they ? According to SY they are only two thirds of the way through the files of information.
That would entirely depend on which news media you choose to read.
There is absolutely no specific direct quote that I can find in any of the media from SY referring to this two thirds notion.
For example the Mail and Express both make claims about the two thirds but do not attribute that directly to SY. Whereas UPI specifically state that SY claim the review is complete. The Telegraph is among many which identify the review as having now been upgraded to an investigation.
Whichever, it is a fact that no-one can deny that enough of the review has been completed for SY to be able to pronounce on the McCanns and Tapas group as not now being suspects or persons of interest.
And whatever you may choose to believe from the media it would appear that the review is no longer operative and a full scale investigation has been launched.