No, this is not a new way to press your clothes, it is a daily reality for those who commute into Tokyo from our neighborhood station.
We're sometimes asked by you, "Are the Tokyo trains as bad as we hear?" If you have a Japanese definition of personal space, then no they are not so bad. But for most Americans who are used to a wider circle of empty space about them, it is pretty hard to adjust to this part of the Japanese culture. What you do not see in the photo is what no doubt happened about 10 seconds prior to this: the white-gloved station platform attendant literally pushing, squeezing, and otherwise using force to get this man, and others into the train car.
Our train line (and neighborhood in general) is changing. They are lying new track to expand the capacity from 2 tracks to 4 tracks. In the process a lot of housing and businesses along the existing line have needed to be demolished. It looks like a war zone in our neighborhood on most days. But when it is finished it is supposed to alleviate some transit capacity problems like this. They promise that trains will only need to be packed to 150% capacity. Yikes!