Google announced on Twitter that it will be launching a Panda refresh- 3.9 on July 24-July 25 night. The latest update to the Panda algorithm is expected to affect about one percent of search results.
This update comes after the 3.8 refresh which happened on June 25th. Google released the Panda in 2011 and has been releasing refreshes every few weeks. Panda 3.7 was quickly followed by Panda 3.8 and now the 3.9 is being rolled out. Find further information on the Panda update here.Panda 3.9 Has Arrived!,