With Android 4.4 - KitKat, Google introduced a new Runtime which they will be using in the future on Android devices. It's called ART for short, which basically means Android Runtime. Previously, Android has used Dalvik as its runtime since, forever. But with ART it's a bit faster and less memory intensive on devices. However, in this stage, you won't notice much of a difference, but I'm willing to bet you will in about a year or so.
One of the big complaints I see about everyone getting the KitKat update for non-Nexus devices, like the G2 for instance, is the fact that it doesn't have ART. Well right now, it's not a big deal, as it's only there for developers and I'd urge everyone to stay away from it.
Now someone has their hands on a Galaxy S5 - assuming it's a Korean model based on the language in the image above - and it appears that the Galaxy S5 does have the ability to run both Dalvik and ART. And that's interesting because the KitKat updates for the Galaxy S4 and Galaxy Note 3 do not include ART, which is part of the default KitKat update that Google shipped to manufacturers. It's a good thing that Samsung did include it, and I'm guessing they will include it in a future update to their "older" devices like the Galaxy S4, Galaxy Note 3, and so on. Since that's what LG has done with the G2. The initial KitKat update didn't include ART, but the second one - that's only out in Korea - has ART on there.
So for those of you that care, ART is on the Galaxy S5 out of the box. I'd still stay away from it for now. But it is there. The Galaxy S5 is due to go on sale in 150 countries on April 11th, which is just under a month away. How many of you are planning on picking one up?