Still, the upcoming software release is only designed to correct a "wetware" problem: Pilots following contrary ATC instructions in spite of TCAS RA advisories.
If Pilots follow TCAS RAs instead of contravening ATC instructions, as is required by FAA (and other countries',
AFAIK) regulations, there would be no requirement for the software change. It extends the "reach" of TCAS to situations for which I doubt it was originally designed.
While the change might add an extra margin in those cases where Pilots follow contravening ATC instructions, will we again blame TCAS when, in the next-generation conflict, a Pilot finally realizes he should follow his TCAS, and reverses at the same time the other Pilot receives his reversal RA?