Great to see pm.zimbra.com return to life. Looks like it happened 2 weeks ago.
Odd that I've seen no mention of ZCS 7 EOL in the forums or support portal, in the context of the recent security incidents or otherwise. But I admit I haven't been paying very close attention.
We've been in limbo for almost two years -- can't upgrade to ZCS 8 because maybe we might want to go GMail or Office365 instead, and can't talk about GMail or Office365 because ZCS 7 is working just great. Hopefully the EOL will be a helpful kick in the pants.