The latest PCI compliance reports (data current as of Dec. 31, 2010) show little change for Level 1 and Level 2 merchants, with each group holding at 96 percent. Level 1 had been at 96 percent for months, but the number of retailers in that group jumped from 358 to 377 (since the prior report in June 30, 2010). Level 2 had been at 95 percent, so the 96 percent figure reflects a slight increase. The number of merchants in Level 2, however, dropped from 894 to 881. So if even a few of those 13 retailers had been non-compliant, that could explain the bump up to 96 percent.
As before, Visa has not released figures from Levels 3 and 4, continuing to label them both as "moderate" with no explanation.