English Pax,
That would be my understanding, yes, subject to a raft of caveats of course and final confirmation when the scheme is revealed. Will it benefit you on PAS? Possibly. Career average (CARE) schemes tend to favour those who pay grades have peaked or which remain largely, unchanged - whereas a Final Salary scheme will favour those who get a great promotion towards the end of a career.
Bear in mind that its not just about the Accrual- it also depends on what the Revaluation rate is going to be. For some (those who have been receiving low-ish pay rises), the revaluation rate can be worth more than the accrual rate (it could be RPI/CPI + 1% for instance) because what you earned 30 years before is still hammered by inflation.
My point was more about those who may be promoted 1 year (under '75) before April 2015 and have therefore yet to nail 2 years pensionable service in rank.