On Slack we talk about it.
Right now, 0.7.x nodes are on the right chain, 0.6.x and earlier on the wrong chain.
So if you run a node and haven't updated, do it now.
My node was updated to 0.7.6 just an hour after the release and hasn't forked.
Here's a list of nodes, check if yours is on it if you run a node:
http://dev.pywaves.org/nodesWould be nice & wise if team will also publish some information here, not everyone is on slack...