The decision comes despite the fact Sony, Square Enix, and over thirty indie developers will be attending. After a strong E3, the company may feel that they have done enough to promote their new projects.
However, this being the second year running, some may feel Microsoft is neglecting the Japanese market. After a huge success in 2014, their lack of presence is disturbing after Microsoft´s announcement of their next-gen console powerhouse Project Scorpio and Sony's expected announcement of the PlayStation Neo.
Project Scorpio will support 320 GBs of memory bandwidth, an 8-core CPU, 6 TFLOPS GPU power and VR support and full quality 4K gaming at 60 frames / second. In comparison, and seemingly in direct competition, the Neo leak reveals Eight Jaguar cores clocked at 2.1GHz, 36 ‘improved' GCN compute units at 911MHz and 8GB GDDR5 at 218GB/s and is rumored to also have a 4K display.
With Head of Xbox Phil Spencer's promise that the new device will be the most powerful gaming console on the market, it will be interesting to see the full details, and could be embarrassing if a superior device is revealed with no representation from Microsoft.
All of this makes it seem increasing likely that Microsoft will follow their strategy from 2015, which included an event at the luxurious Club eX and featured a number of panels and demo stations.
Whatever the case, it's important to remember that due to the diverse number of developers in attendance Xbox One games will still be on show and gamers may even get a glimpse of some 4K gameplay footage.
We will keep you updated with Microsoft's strategy for Japan as more details are revealed.