I've been seeing very mixed messages about the vzw update on XDA.
If you have root and twrp, want to keep it, you might want to seriously consider freezing "System updates" until things shake out a bit. Wait to get feedback from some of the developer gurus.
Some have reported losing root, others have had a bear of a time trying to rollback to 10b.
If everything is great, the update will still be there in another week