Hi,
Yes, absolutely that: Improved performance and interoperability enhancements. Our BI and BW developers work collaboratively to ensure fix and enhancements are ported into both products to ensure smooth integration. For example, the BICS API is updated.
If you search on the component BW-BEX-OT-BICS you will see a number of fixes that are in BW 7.4.x that aren't ever in BW 7.2 - it is these corrections that the latest codelines of BI4.1 are leveraging.
Regards,
H