The improvements claimed by New55 are pretty cool...coaterless prints, no choosing between pos and neg, and clearing with standard fixer (presumably a hardening fixer, but I don't think they specify). I can't wait until we see it! $6 is a decent price, much less than old stock Type 55 is going for on eBay.
I'm not so sure Impossible is intent on improving their film quality and price. They're embracing the "quality" it produces fully in their marketing. I hope they eventually release a true 600/SX-70 replacement, but I'm not holding my breath waiting. And they're marketing it as a couture item, that justifies the hefty price premium in their mind. I haven't bought any, and I doubt I will until they figure out a way to give me at least 10 exposures for my $30.