TPS7H1121-SP: Availability of 24 pin package

Tool/software:

Hi, 

The datasheet for this part specifies that there is a 24 pin package available soon. Is there a timetable for when this will be available? Additionally, I see that the lower grade TPS7H1121-SEP will also be available in the same package at some point in the future. Will these two footprints be pin-to-pin compatible? 

I would like to baseline the TPS7H1121-SP in my design with a pin-to-pin compatible footprint for the lower grade component such that either option can be used.

Thanks,

Paul