I'm going to be the cynic here, and propose that Fuji is trying to pull a fast one on us. Why would they cut multiple lines of film based on insufficient budget, and then spend who knows how much money on research, development, testing, etc on a new version of an existing film stock? I say they have a warehouse full of (old) Acros that they need to get rid of so that they can cut production of it as well, and by relabeling it as "NEW" Acros they'll be able to get it out of their warehouse faster. Prove me wrong 
Proof is that would make no sense from a sales and marketing perspective.
Cutting spending on other lines would free up money for reformulating (ie. cheapening) their better selling product (eg. Acros 100). If they wanted to sell Acros fast as possible to get rid of it, they would just say they were discontinuing it as they did - spending money on printing new packaging for a discontinued product that has no planned future would be insane.
Saying up front that "Acros II is coming out very soon, which is why we're discontinuing the current Acros" would be a great way to end up with tons of unsaleable stock while people wait for the new product.
I too wondered why Acros was being discontinued, because its spot in Fuji's product line and its popularity seemed to make it a natural choice for the company to stick with. I thought perhaps it was a ploy to sell off an old run before a new run was started, ala Holga (remember when the Holga tooling was "destroyed" and there were going to be no new Holgas,
ever! - and then a few months later new Holgas) but an Acros II is an even smarter marketing ploy (why didn't Holga think up a Holga II box?).
