Sorry for any inconvenience!
The main feature we have added is the capability of setting a custom font for the lock screen only using a cydget.
Since iOS 7 uses the same font for lock screen and system, it is not possible to customise the lock screen alone via BytaFont 2 as you used to do via BytaFont 1.x in iOS 6.
Nevertheless, since this is really a top-requested feature, we took the inspiration for a workaround from this post on reddit.com.
Now using BytaFont 2.1 and Cydget you’ll be able to display a specific font just for the lock screen. [..]