From different sources it is heard that 64-bit support is coming to Android very soon. It is also rumoured that Android 4.4 KitKat would be that version supporting 64-bit architechture.
Image Source : Android Authority
In the above image which is taken from a presentation given by Intel at its Developer Forum last week, you can see the future computing plans supporting various operating systems like Windows and Android. It is also observed from the presentation that 64-bit support is mentioned as an upcoming plan for Android devices that will have Intel chips architecture.
Though Intel did not confirm that 64-bit support is coming to Android 4.4 KitKat or not. It is not an impossible thing as you can see the recent interests of people in mobile processors with such powers and performance.
During IDF 2013 Intel was joined on stage by Google, Sundar Pichai himself talk about Chrome and Android. The giant chipmaker is more and more interested to increase its presence in the Android world. No need for excitement about 64-bit processing now, as no matter how promising it may sound, we shall have to wait till the release of Android 4.4 KitKat and whether it offers supportable options or not. Though it seems that 64-bit chips will be found in more and more mobile devices in the coming years. As of now Google should be ready to support them with future versions of its operating systems for enhancement purposes.
Google may unveil the next Nexus smartphone alongside Android 4.4 KitKat on October 14. May the rumour come true so that we can have such hands on experience.
Source : Android Authority