Gmail for Your Domain Capacity Upgraded to 15G?

Some enterprise-level Gmail users have found their Gmail capacity increased to 15GB, and there are also some minor changes, such as free users being able to have 25 email addresses.

Typically, this kind of free enterprise-level Gmail has a capacity of 2GB, but there aren't many users experiencing the above situation. It could possibly be a system error, or it might be that Google is preparing for an upgrade. Of course, it's also possible that it's a trick by Google to encourage an increase in paid users.