Regarding ESOA - Hype or Reality w.r.t PI

Hello Friends,

Im working in Process Integration area.And heard abt the ESOA.

My Queries are

1.How the ESOA will enrich Netweaver Process Integration.

2.I have seen in a SAP blog the definition of SOA as "Loose Coupling, Open-Closed or Interface Segregation ".... But I heard all these words long time ago...whats new with this ESOA.

2.I have seen couple of sites that SOA is just hype created ..I think its a strong statement....IS it not?? So,Is ESA is really a good methodology...

Note : I am not expecting links ....I have already searched SDN ,and got these queries