Nope. It still opens here on both firefox as well as chrome.

sub.odoo.com seems to be down as well.

Edit: It's working now, using another sub
Maybe I wasn't paying attention when this was launched, but unless a database is linked to an enterprise subscription, the sub won't resolve any more. I got the hint after having created a new instance, when I saw the message telling me I was on a 15day trial.

I thought we didn't need to subscribe unless adding more than 2 users.

There are still problems with URLs though as we sometimes get redirected to openerp.com

Solved but I did not understand the reason.

Cleared Chrome cache.

(I am answering with Chrome)