As they say, slowly but surely, but we can be forgiven for sometimes wishing things would go a bit faster. Based on data collected by Google from the beginning of the year to January 8, Android 4.4 now occupies 1.4% of installed Android devices.
Sure it's a measly 0.3% increase from last month's statistics, but an increase nonetheless. It's definitely unreasonable to expect a sudden growth spurt, given how young the latest Android version is. Device manufacturers more often than not err on the safe side, preferring to use a more familiar and tested version, especially for devices that somewhat try to break the mold of your conventional Android hardware, particularly all-in-one computers and dual-booting tablets.
That said, very few of the devices revealed at CES 2014 held recently ran or are planned to run Android 4.4. Majority still cling to the three versions of Android Jelly Bean. Fortunately, the situation is getting better, with Android 4.2 and Android 4.3 rising while Android 4.1's share is also slowly decreasing. As even newer devices, both high- and mid-range ones, make use of semi-recent releases.
Android 2.3 Gingerbread still has a large foothold at 21.2% of the installed base, with Android 4.0 Ice Cream Sandwich at 16.9%. We will hopefully see this number decrease, but probably slowly, over time. Android 4.4 is also advertised to work on smartphones with not so powerful resources but we have yet to see a commercial device that truly proves that capability.