Sony's new flagship, the Xperia S is to come with an anti-stain coating and fast charge capability. There are no details regarding this in their blog or in the phone white paper but the company's Facebook page confirms it. Anti-stain coating is a nano coating on the phone that keeps the dirt away and is also UV active. PocketPC.ch recently spoke to a Sony Ericsson production manager and he also confirmed the presence of anti-stain coating on Xperia S.
It seems there is another interesting feature in the Xperia S, that is the fast charge capability. In detail, the charging time of the phone is considerably reduced. That is, the battery gets to 80% in just 30 minutes since it is charged on relatively high amperes and thereafter the current rate lowers until it is fully charged. In daily life this means a 10 minutes charge will give you a 1 hour talk time and if you charge your phone for 30 minutes, you easily get a day out of the battery. This sounds cool if it is true and is really a feature of Xperia S's sealed 1750 mAh battery.
We have a video from Mobile-Review demonstrating the anti-stain feature of Xperia S.
source: xperia blog