Originally Posted by NiLuJe
The usual warnings still apply: 5.3.0 is still a huge mess for the dev community. This is just a somewhat sneaky workaround. For now, new devices shipped on 5.3.0 won't be able to be JailBroken...
Just like 5.1.0 became known (for awhile) as the "screw the pooch" update, I think 5.3.0 will be known as the "middle finger" update.
EDIT: Or perhaps that is not strong enough? After discovering the "anti-JBPatch" re-obfuscation in 5.3.0, how about calling it the "swift kick in the nuts" update?