AVR is one of my favorite chips as a hobbyist. 8-bits, manuals in the less than 500 pages region (very small compared to Cortex-M0+ which are closer to the 1000 or 2000 page long regions if we include instruction sets and other details), etc. etc. So I'm happy to see Microchip continue to support simpler 8-bit chips for those who need them.

For those looking to use this chip exactly: it seems like AVR LA specializes in low-cost, low-power, and capacitive touch. Most components have been stripped out, the ADC is only 10-bits, there's no more dual power supply (like AVR DD, DB, or DA), there's no special features like op-amps (AVR DB), or programmable gain differential ADCs (like AVR EA or EB).

You do get event system, CCLs (AVR's feature of LUTs, functioning as useful "glue logic" that can implement a few simple XOR, AND, OR, NOT gates for those who need simple glue), RTC, and PTC (aka: Peripheral Touch Controller, Microchip's system of building capacitive touch).

At 1.62V minimum (and up to 5.5V maximum), this is seemingly the lowest voltage I've seen from AVR lines. For anyone with a buck or boost converter in their designs, this should lower power usage a fair bit over the 1.8V previous minimums.

Finally, the 5k unit pricing is around 50-cents or so. This is the cheapest AVR 8-bit you can buy, if anyone were doing a large scale mass manufacturing line. But for most hobbyistss, I don't believe we can sufficiently tell the difference between 50c chips and $2.00 chips.

So its very barebones outside of capacitive touch. Still, this shows a commitment from Microchip to continue to support AVR chips and their ecosystem. I would recommend beginners use the AVR DB instead (which come with 3x OpAmps and far more features), unless you really want a barebones capacitive touch controller.