No idea on the availability (again, I'm not involved or privy to Leader's business plans or operation). We're hoping we're able to get some too. ;^)
We'll be presenting our results on the CV2 at meetings this year. In general, increases are about the same or larger (probably depends on the type of season) than the original version. The expected gain depends upon a lot of factors. We did test them against other clear spouts this year with good results.