there are some problem that I have noticed on the Verizon network that is Gimping my BB10 experience which is not making me happy
1 The Verizon network is causing a big problem with remote file access. (still no update on a fix)
2 The Verizon network is causing a problem with built in voice mail. (still no update on a fix)
The newer versions of the BB10 OS software fix the first problem, however I use the free YouMail app (sideloaded app officially provided by the developer) for Virtual Voice Mail so I don't know about the problem with #2.
You can load the official 10.2 OS upgrade that is being released worldwide onto your Verizon Z10. The Verizon reps here will say you will void your BlackBerry warranty, but these are official OS's, not "leaks", so it will not. Go to CrackBerry.com to find out how, it's not too hard to install unless you don't know anything about using a computer.