I did a little calculation with your numbers and this is what I've found out:
230 000 yen = 1840 USD (if you assume 1 USD = 125 yen - 2002 exchange ratio)
230 000 yen = 2987 USD (if you use todays ratio between USD and yen)
On the USA Canon page there is MSRP price 2299 USD (which equals to 177 023 with todays ratio). So actually USA price is lower then Japan price for 24-70 II.
So first thing is that when this new lens will be available (in stock, not pre-orders) price will be actually lower then 2299 USD. Also it is only MSRP. My guess is that around summer time price will be +- 1800 USD from resellers.
...and a little thought an the end. If you check japanese page you will find out that MSRPs are:
EF 24-70 f/2.8L - 220 000 yen
EF 24-70 f/2.8L II - 230 000 yen
So the difference between them is only 10 000 yen = 129.87 USD (todays ratio). Current price for Mk I is 1 369 USD (B&H), 1399 (Adorama) - ofc without rabates that are actually on Canon stuff.
If my calculations and assumptions are right (let's take 1500 USD as highest price tag for Mk I) then Mk II should be around +-1800 USD (including that this is a new item, new tech, coatings, lens elements and so... also when in full production and available at stores and resellers). I think we should wait, let's say until summer, and the price will drop. Just my 0.02 cents to discussion.