This is all "unofficial", but I have decided to share a few details. Server accounts are not vaporware and I will soon prove this with a video in the near future demonstrating logging in, logging out, creating accounts, creating characters, deleting characters, and more will be shown. I think this will help pave the way to even more fun features such as trading depots, mailing items, integrated chat, and even multiplayer.
Another early detail I have been working on is monetization. Note that none of this is confirmed:
Free: unlocks all of normal, one playable character, no bank, no leaderboard
$1: Paid Account Status - unlock nightmare/hell, leaderboard access, 2 playable characters, ability to unlock additional bank slots/characters
$1: Unlock 2 additional character slots
$1: Unlock 18 bank slots
Feel free to provide feedback. The more constructive the better.