Google made an announcement yesterday that they will limit the free Google Apps offering (Standard Edition) to 50 users. All in all some major changes to the Google Apps business model and channel this week.
… Today we’re making a change to better align the versions of Google Apps with the interests of business customers and resellers. Starting today, Standard Edition will support a maximum of 50 users for new customers. Existing Standard Edition customers with more than 50 users can continue their current service at no charge, and schools and non-profits of all sizes still have access to the free Education Edition. …
Source : Google Enterprise Blog