Wikipedia lists the commissioning for Izumo as march 2015. Considering the ship was only launched last august, I think a year and a half of fitting out + sea trials before commissioning is very optimistic as it is.
I'm most interested to know when the two new aegis ships are supposed come into play, mostly to see how strongly the JMSDF will be able to delay the PLAN's massive influx of its own APAR equipped DDGs in coming years.
Yea, March 2015 is pretty close to early next year. Not too far off there. Seeing that they have experience now with the two Hyugas and that this vessel is a little bigger, but with very similar systems, I believe they will meet that type of time frame.
I believe we will see the 2nd vessel launched by the end of 2015 or early 2016.
They will then have four such large, flat deck vessels. But really, the last two will be the only ones with any chance at all for STOTL fighter operations, and then only if they were to purchase F-35Bs, which they have not planned or budgeted for at all as of yet.
Now, V-22 operations may be another thing.
As to the next two Atago DDGs, my understanding is that the funding will be for 2015 and 2016 respectively for the two ships, which means they will start building in 2016 and 2017, launch in 2018 and 2019 and be commissioned in 2019 and 2020.
This will give Japan eight AEGIS class destroyers of 9,000 and 10,000 tons.