There should come 4.4 update for Padfone 2: http://www.asus.com/News/ooRHdSBjKOGE6uZI
Their Padfone 2 late 2012 was even more powerful than this one but this one has Android 4.3 in its features, not to mention their new skin layout.
Until now the Padfone 2 has no signs of even a 4.2 jelly bean update. I really love the concept but ASUS lately is very slow in updates and might already forgot the 1 million buyers of Padfone 2.
So I say, no to ASUS anymore
ASUS is a great brand with quality products which is why i hate them for not releasing their Padfone line worldwide :)
Horrible buying experience with ASUS. although their CS is great, I will never buy it again.