According to this document it has gone end of sale (October 30, 2016).
Alas it does not give the M2 replacement part number. I suspect it may be more complicated depending on what other hardware is in the 7k.
This is a close fit, but only 24 port (N7K-M224XP-23L).
That's what i thought. When i went to www.cisco.com/go/nexus and & started looking for that particular line-card; it wouldn't allow me to go any further. It makes sense that its end of sale but just wanted to make sure.
Once again, thanks for your assistance.
There is no equivalent 32 port card. M224 could be a possible choice or you can look into F3 modules as well depending on the required port density and the features you plan to run on this card.