Yes,
AS is the community version, free for use without any charge.
EAP is the Enterprise version, you need a subscription to run that in production.
The EAP versions are available with a subscripton login from the 'Customer support portal'.
Starting with EAP6.1 the same bits are available from the community download page, but you are not free to use in production (see several discussions)
Only EAP6.1.0.Alpha is free as this are the same bits as AS7.2.0 (release tag in github).