We have Sonic2765's java card which will always work, and a promised method from beaups.
Sonic's Java Card will work on any device.
Sonic's thread: http://forum.xda-developers.com/show....php?t=2427960
Beaups method will work on any device even with the minor OTA that was released.
So, it seems safe to take the OTA, but I am not responsible if this is incorrect.