Hi Midhun,
Not sure where you got the Q1 data from - SAP has never communicated a date for General Availability. And this is exactly the reason why: to not set expectation that we then won't meet.
Ramp-up is a KPI driven process that involves many customer implementation projects, among others, and due to the nature of this process, SAP does not publish dates unless we are certain that they are met.
cheers,
Jan