DashClock for Android offers an improved lock-screen for Android 4.2 devices

The DashClock widget for Android is an extremely useful widget for Android 4.2 Jelly Bean devices. You can extend the widget by adding extensions like local weather information, missed calls, text messages, calendar appointments, GMail inbox and scheduled alarms. The widget can be used on your homescreen or on your Android lockscreen.

You can download the widget for FREE on your device through the Google Play Store or by using the link which follows:

Download
Price	Free
Requirements	Android 4.2 or greater

To add the widget to your Android 4.2 device's lock screen, simply swipe to the left-most page of your lock screen and touch the "+" icon. Then, select "DashClock" to customize and add the widget. You can make this the primary lock screen widget, replacing the default clock, by first touching-and-holding it and then dragging it horizontally to the very rightmost position.