"Full rate production" is mentioned there, which means it's a new engine. Or it wouldn't make sense to include it, nor consider it a "new engine". Nor would the numbers be so small, as though it's just beginning to graduate from LRIP.
GE began the EPE demonstrator and Enhanced Engine for India's MMRCA, which was an upgrade over the USN's EDE demonstrator program. So both are the same engine. The USN could continue with 98KN thrust, for them the enhanced electrical power could be of prime importance. As for what IN chooses in the end, we need to see. All we have seen is the trials of existing models, not a future ISE-derived jet.
The engine before EDE/EPE was a 7 stage engine, EDE/EPE are 6 stage engines. Likely what the contract is referring to.
Official sources are not gospel, so we gotta be careful. The F414-INS6 specs are actually for the F404-IN20.