The GUI in the top left has been revamped slightly to both be aesthetically pleasing, and provide info about a new feature: Bank Accounts.
Bank Accounts are a way of remotely saving your money without worrying about other players stealing your money. ATMs are your way of both depositing and withdrawing money from your bank account. The ATM itself is only one block tall which allows you to put it inside of walls, or build a free-standing ATM.
Here’s an example of the ATM’s GUI. It has buttons for toggling between Depositing and Withdrawing along with an Accept and Decline button. These buttons are pretty much self explanatory.
Depositing has no limit other than the amount of money you can carry in your inventory. In the future, wallets will be added which let you store money physically and conserve your normal inventory space. The ATM will have automatic support for this and consider any money in your wallet as money on your person, allowing you to deposit it.
Withdrawal, however, currently has a $25,000 Withdraw Limit. This is due to the fact that the money takes up so much inventory space ($25,000 is approximately four stacks of $100 dollar bills). This limit will probably be heightened once wallets are added. This limit is subject to change before the release of the new version of the mod.
Withdrawal also only let’s you withdraw what’s in your bank account. If 0 dollars is in your bank account, you will not be able to withdraw anything.