OTA Rootkeeper still works when updating to Android 4.2.1

Note (2013-02-18):

There is a newer blog entry available which says that OTA Rootkeeper did not properly reroot the device after upgrading to Android 4.2.1.

The observations I made when I wrote this post seem to be false.

Original blog posting:

And surprise, surprise OTA Rootkeeper has helped me once again to keep root on my Nexus 7 device.
BTW, Google rolled out Android 4.2.1 today and I already received the OTA update :-)