The first time we had a theory about what the KitKat Twitter feed might be suggesting with its posts, it took some leaps in logic to get to the idea that Google might be aiming at October 28th as the date to announce Android 4.4 and the Nexus 5. This time around, the theory is a bit easier to follow, but where it is pointing is a bit less believable...
Source: http://www.phonearena.com/news/New-teaser-theory-puts-Android-4.4-announcement-on-October-21st_id48411
Source: http://www.phonearena.com/news/New-teaser-theory-puts-Android-4.4-announcement-on-October-21st_id48411