Sony has said that it will not release a firmware update to disable the light bar for games which do not use this feature on the DualShock 4.
The news comes from Sony WorldWide boss Shuhei Yoshida, who was responding to a query on the matter from a PS4 user via Twitter. When asked, Yoshida said "no" when asked if the LEDs will be turned off to help save the user battery.
Yoshida then went on to say that "the LEDs do not use much battery."
To be honest this doesn't really seem much of a big deal to us, but others seem to care.