Google has changed the date information attached to a review and switched from the actual date created to a rough estimate of when it was created. The actual date is still visible if you click through to the reviewer. The change seems to create a greater visual sense of whether reviews are coming in over time.
Now if they would just fix the problem of losing reviews. I find it amazing that Google is continuing to release new local products without fixing underlying issues like the problems they have keeping track of reviews and their lack of transparency in fighting review spam…Minor Change to Review Presentation on the Places Page by Mike Blumenthal