ATMegaTiny1616 Development board with built-in UPDI programmer

This is a continuation of a recent prototype, only in a different package, and with some more onboard peripherals. I used a QFN package in the initial project, and basically only did a breakout board. This was to test some of the chip's functionality, without spending too much time on peripherals like voltage regulators. In this remake, lets call it prototype 2, I added what, in my opinion, is the minimum to make for a comfortable development experience. The board features a built-in UPDI programmer - NOTE this is NOT a UART port, that can also be used to program other UPDI chips. ( the feature is 3.3v to 5v by changing a single jumper. This was done to get rid of the need for logic-level translators. In addition to all of this, I decided to use the standard Arduino Uno PCB form factor, as well as a close-but-not-exact pin payout, as well as add a DC barrel connector to make powering the device easier, in case it is used in a stand-alone project, PCBWay did their usual excellent job on the manufacturing, with the board being ready to ship in a little less than 24 hours. Delivery was quick and on time, and everything looks great. Thank you. Assembly is next, but that may have to happen in stages as some of the components have still not arrived from my other suppliers, despite being ordered well in advance of this PCB :)