In the mobile device race, smaller and thinner is always better. The newly announced LG Optimus G2 is so incredibly thin, there’s no room for power or volume buttons around the casing.
In a translation of web site MyDrivers, the report seems to be saying that the buttons will be moved to the back of the case, which could be a pretty cool design, though the site points out that it could lead to a lot of input error, and many users might opt for a more traditional design because of that.