Google Android 4.4.4 has been made available for select Nexus devices and contains a notable fix for the OpenSSL Heartbleed bug that was uncovered earlier this year.
Android 4.4.4 has not been marked by any official release but Google's Factory Images page for its line of Nexus devices lists several Nexus devices as now being able to receive the update.
The devices are: the Nexus 7 2013 WiFi model, the Nexus 10, Nexus 4, Nexus 5, Nexus 7 (WiFi), and Nexus 7 (3G).
While little detail on what the update provides was offered, Sascha Prueter, an Android program manager at Google, confirmed on his Google+ page that it contained fixes for the Heartbleed bug.
“[The update is] primarily addressing CVE-2014-0224,” he wrote, in response to a question on his profile page.
Prueter also confirmed on his page that other security fixes are covered, although did not elaborate on the nature of this issues. "It addresses some other (not quite as severe) security issues," he said.
The Heartbleed bug was uncovered in April. It left millions of web servers around the world at risk, posing major security concerns. It affected encryption software called OpenSSL used by open-source web servers such as Apache and Nginx.
Since then the tech community has moved to shore up its defences against this threat, with new funding and more manpower add to the project, in order to ensure further threats are uncovered or halted before they go live.
Google's I/O conference is taking place next week and could well feature details of the next major upgrade of Android to version 5.0. Given the style of using desserts for its name while moving down the alphabet, Android 5.0 may well be called Lollipop.