It is strongly recommended that everybody update to the latest version v0.12.1.2 as well as the latest sentinel.  Moocowmoo's Dashman makes this very quick and easy. The sooner most of the network is on v0.12.1.2 the earlier enforcement can be reenabled. It will be nice to get InstantSend back and not have to worry about the off-chance of a greedy miner not paying one of my nodes.

https://github.com/moocowmoo/dashman

EDIT: Fixed the version numbering gaffe