I doubt it. The issue is the 32MB of EDRAM. I'm not sure how reliably that can be manufactured even now. I suppose they could go to ESRAM as an alternative as long as they match the performance specs (which should be possible as the rumored bandwidth isn't that high, I think), but the I doubt they would get a significant cost savings in that case.
So we are back at square one:
Managment decision imposing Wii hardware backward compatibility -> EDRAM memory pool in order to easily emulate via hardware the 24MB main ram of Wii -> expensive relatively weak hardware that can't easily be cheapened in the future.