No the bank is still here...just a little less complicated...no more bow wave/spillback stuff. Basically you get paid for what you fly ever month...except you can use the bank as a tool. You can deposit extra house flown (above the ALV...average line value) into your bank and withdraw them at a later time for extra cash or to pay for personal drops, supplement low-time months, whatever. A good strategy is to deposit hours into it worked at a lower pay-rate, and take out the hours later at a higher pay-rate. You can also buy additional vacation days with your bank.
You may carry a negative balance in your bank up to 30 hours. If you carry a negative bank, its basically a loan from the company, and the first 5 hours of overtime you fly gets automatically deposited in your bank to pay off your negative balance.
I'm sure there are more nuances to it, but you get the drift.