I always find the report has very good information to summerise the spam activities for the previous month. I use it as a main source for our monthly reporting. According the main site it states this report will release in the first week of each month but looks like the actual fact it is not the case (eg: last month was on 12/2/10). In the past, we can only use the industry report for eg FEB on a March report which talks about Jan spam landscape. You start to see the relevance goes down for people who read this report.
Understanding it take time to compile this report, however can Symantec provides a date which they can stick to?
Protect with knowledge. During the first week of each month Symantec issues a State of Spam Report summarizing the spam trends and email threats from the previous month. The State of Spam Report leverages security data from the Symantec Global Intelligence Network to keep you informed of the latest threats to your email. Download this month's report below.