Maintenance for the week of October 6:
• [COMPLETE] ESO Store and Account System for maintenance – October 7, 6:00AM EDT (10:00 UTC) - 4:00PM EDT (20:00 UTC)
The game has been unplayable for me since yesterday. Sometimes it freezes immediately after character select, sometimes on the first loading screen, sometimes I actually load in and can see (but not select) the login reward. Here's a few relevant threads on Steam of others having the same issue over the last two days.