This is correct.
1.0 is the original firmware.
1.01 is the updated whitener
and 2.0 is shipping on new devices with dual noise sources. Some early betas might have gotten mixed up (such as a handful of updated whiteners still saying 1.0, or 2.0 devices saying 1.01).
Whoops, looks like 1.02 was updated so that the firmware base matches that of 2.0 code base, it should perform just like a 1.01 device (or a 2.0 device with 1 noise generator).