From the NetWorks Group Helpdesk
Updating your Software
Seems like we've been getting a large number of questions about patching and upgrading Juniper Networks security products. Keeping current versions of software is one of the best ways you can keep your network safe. In addition, support for new products and OS like Windows 7 is often included in new releases.
And it's never been easier to do. (Usually about the same level of effort as attaching an email.)
https://www.juniper.net/customers/support/
Juniper also has a page of recommended software for each device.
Christian Klaver, CCSA, CCSE, JNCIA-SSL, JNCIA-FW
July 2, 2010