We are currently investigating issues some players are having on the megaservers. We will update as new information becomes available.
We are currently investigating issues some players are having with the ESO Store and Account System. We will update as new information becomes available.
In response to the ongoing issue, the ESO Store and Account System have been taken offline for maintenance.
Possible Heartbleed?
I clicked the link in my launcher called "The Road Ahead - May 1st".
And my chrome browser addon "Chromebleed" which detects/checks for possible Heartbleed SSL bugs showed up with a warning.
You might want to look into that