Google announced another Panda Update on September 18, 2012, and the refresh is intended to impact approximately 0.7 percent of queries. While most of these updates go unnamed, Search Engine Land refers to the latest change as Panda 3.92. The last refresh came on August 20, 2012, and influenced 1 percent of queries – these refreshes are well below the initial Panda release, which affected 11.8 percent of searches back in February 2011.
Google doesn't always label the algorithm changes it makes, and sometimes the company neglects to announce the refreshes altogether. The last big update was Panda 3.5, and most online marketing professionals were unaware it had happened because the upgrade came at the same time as the Penguin Update.
It's safe to assume that Google will continue to unveil new changes as time moves forward, but the upgrades will affect fewer and fewer websites. This trend isn't because refreshes are losing influence – the majority of online professionals understand they need to use White Hat search engine optimization tactics to remain visible online.
KEO Marketing can help businesses adapt to future algorithm changes, even when updates aren't announced in advance.