sFIN 2.0

To Whom It May Concern:

Not sure if this is very obvious but it seems that sFIN 2.0 has been replaced by or extended with 1503 (On-Premise Edition): SAP Simple Finance, On-Premise Edition – SAP Help Portal Page.

I didn't realize that there was 1402 (or if it was a replacement of or extension to sFIN 1.0).

Will there be 1604 and what will be new about it? 

Thank you,

greg