1: KEEP CALM
2: the chain has been recalibrated. It won't even really be a hardfork. Please just update your client as soon as the new one is posted here in the next few minutes.
3: Git is being updated shortly as well.
4: change will take affect in two days (you have two days to download the new 0.8.4.1 client)
And thank you for being a part of this. This is really a minor hiccup
30.000 or 32.000 block is better for fork!
30,000 is ~3/4 days. 20,000 is ~1/2 days. We really should have the change come sooner rather than later.
Nova is really the only exchange currently running the client as the others are waiting for after swap ends.
So if everything simply upgrades their clients everything will be fine. you don't have to do anything special. No resync, nothing just run the new one.
Only upgrade client (w/o hardfork) will make the collapse of the network. You need add new