SharePoint 2007/WSS V3.0 August 26th 2008 cumulative hotfixes are now available
The official announcement on the SharePoint team blog can be found here.
The WSS V3.0 hotfix KB956057 article can be found here: http://support.microsoft.com/kb/956057
The SharePoint 2007 hotfix KB956056 article can be found here: http://support.microsoft.com/kb/956056/
The important thing to note is that we will be releasing cumulative updates every two months to ensure an ongoing quality product for our customers.
I would recommend you test these fixes in your test/staging environments prior to implementing these into your production environment. These hotfixes are updates to the infrastructure updates that were released in July.