I just grabbed the package and am checking it out now to see what all is in it. Just because it is small doesn't mean there isn't anything fun inside.
First, like the OTA before it, this one will attempt to enable what I call
the FRS. If it succeeds, flashing on a custom recovery will not stick unless you change your kernel or disable the FRS in another way (see the link).
Second,package is coded to install over the following builds:
Code:
verizon/voles/sholes/sholes:2.2/FRG01B/45394:user/release-keys
verizon/voles/sholes/sholes:2.2/FRG22D/50454:user/release-keys
That second one in the list is the same build fingerprint as you'll have when the patch finishes (and is also the same build fingerprint that was in P3Droid's leak earlier in the week).
Perhaps there was an earlier OTA with the same build fingerprint that saw very limited distribution. Why else would you design a package coded to install over it's own build fingerprint?
Anyway, that's what I see in there on first glance.