Programming ATtiny816 using Arduino IDE

I have a question regarding the arduino bootloader. Wanted to use ATtiny816 micro controller in an ongoing project of mine. Can you please let me know how to program that controller using Arduino IDE.

Here is the link to the datasheet ATtiny816.

adding support for that is going to be a HUGE production. Months of work to get something that feels like an Arduino. The features are oh so sexy, but everything is different, all the old libraries, totally out. Everything needs to be rewritten. I've ordered a few of the chips, but they're still not shipping from major vendors yet.

It is bigger change than ever before in the AVR core - they've basically changed everything about every aspect of the underlying hardware.