Evad3rs have recently released an updated version of their untether in Cydia that contains a bunch of improvements. The most important is probably a tweak that saurik requires to fix the problem with MobileSubstrate and make it fully functional.
According to the latest estimates, most online Christmas orders from mobile devices - smartphones and tablets - were placed by iPhone and iPad users. What that means is that iOS still remains the most popular mobile platform in the USA. Android is, naturally, the second.