The two major changes we are releasing on Feb 2 2014 are:

1. Backup Agent downloads are no longer customized. That is, users will need to manually update the configuration file to enter their API key.

2. We are now providing proper deb and rpm packages for Linux. This fact means that for the users using the packages they will need to go through the inconvenience of adding their API key only once.

This page needs a corresponding update:

https://mms.mongodb.com/help/backup/tutorial/install-and-start-backup-agent/