that's why it is unwise to update to 0.9.3 prior we test bts2.0 with devshares!
I personally suggest we upgrade near the snapshot date... (normaly couple of days before snapshot everything will be smooth so nobody will make a second thought's about upgrading)...
The worst case scenario would be to delay the hard fork without needing to downgrade our clients to 0.9.2 again!!!!
PS I will be more confident after the "official" devshares2.0 test net.... so i wait a bit for the upgrade.