You will notice the removal of the Created Date* and the addition of Balance after Total. This is because it is now possible to add a partial payment to an invoice, so having an at-a-glance look an invoices Total as well as its remaining Balance is helpful.
*the Created date still exists inside the invoice.
A refreshed set of actions is available from inside an invoice, including Send Invoice, Print, Add Payment/Refund, and More.
The Amount column of line items no longer includes tax, instead all accumulated taxes are shown after Subtotal, if you have multiple taxes this is shown as well.
When you visit a Pending invoice, you have the ability to Charge Early, which will provide you with a screen to select which items you want to charge early for.