I stumbled on this resource and may be of value to some organizations. Of the firms that I have done work for, many are keen on ways to improve Security Awareness. They want to deliver content, but may not have the resources to deliver unique content. Take a look at the sample newsletter to see if it could assist your organization.

An excerpt from their page:

From the editors of CSO magazine, Security Smart is a quarterly newsletter ready for distribution to your employees - saving you precious time on employee education! The compelling content combines personal and organization safety tips, making it applicable to many facets of employees’ lives. Security Smart has an easy-to-read design and engaging & entertaining articles so you are assured that your intended audience of employees - your organization’s most valuable assets - will read and retain the information.

Check out a sample:
http://www.securitysmartnewsletter.com/pdf/newsletter/newsletter1.pdf