I've just completed SAP Associate PM exam last week. First, wanted to thank SAP team who was working on ASAP 8 as such and C_PM_71 exam in particular. Great experience I should say. I am familiar with many PM/SDLC-related methodologies and I was positively surprised how ASAP 8 managed to combine some of the best pieces from each of them in a concise manner. The roadmap itself became cleaner (in comparison with previous versions) and leaner with more straight to the point accelerators and not over-complicated RACI matrix.
I plan to write an extended post focusing on ASAP 8 goodies from IT PM and IT Service Management perspectives, drawing parallels with PMBOK, PRINCE2, MSP, ITIL and IPMA ICB.
Bottom line, if you only speak SAPanese, ASAP 8 will give you a broader perspective to industry-standard IT PM, ALM and ITSM approaches ('cause world doesn't end with SAP. Maybe); if you are new to SAP but have general PM/ITSM background, ASAP 8 will show you how to apply that knowledge within the SAP environment.