Warping has always been detectable. If you are going to write position-spoofing plugins of any kind (like ghost, etc), you need to know these two packets. This will only be of use to plugin authors.
We would all like to know what all is being tracked in order to write safer plugins, of course. For example, the movement-type byte in the old movement_tracking packet could be overwritten with a 2 whenever it was a 3 in order to hide warping. Now we just gotta figure out what the hell they are doing with this new gigantic one.
--Jimbo