There is one guy on here that claims he went from .11.102.2 to .32.10 last week. However, when someone asked for a pic of the revision notes he created an entire story about how he couldn't and got into a drawn-out back and forth saying to "take my word for it" multiple times. In my experience, if someone asks you to trust them once, you can probably just take their word for it, but if they ask if you trust them multiple times, you should not trust them.
I put the probability that they are telling the truth at maybe 60% because there is nothing gained by not telling the truth, but they are acting suspicious as hell.