Business Blueprint in Solman 7.2

Hi All,

A very Happy new year to all... !!!

As SAP is gearing up for release of Solman 7.2 in 2016, I have few queries w.r.t Business Blueprint(BB).

1. In 7.1 we have multiple ways to create BB like RBPD, Manual, BPR etc. So will these options will still remain in 7.2 or it will be only through Application Component Hierarchy (ACH). ?
2. Will I be able to migrate my 7.1 BB  to 7.2 even though BB was generated using RBPD/Manual/BPR
3. If i have used ACH in 7.1 itself for BB, will it have more advantages while migrating to 7.2 ?

Regards

Praveen