Argon2 Support
Are there any plans to add support for cracking Argon2? If so, how far down the road would this be?

Reason for asking - performing a undergraduate study comparing Argon2 and PBKDF2, and would like to do testing using a common cracking software. JtR supports Argon2, but seems to have some issues with PBKDF2-hmac-sha512, whereas hashcat does not.

Any information and/or advice would be greatly appreciated!
Surprisingly there isn't even a github issue for argon2 support (except as part of a keepass update). I'd be interested in seeing how hashcat performs with various argon2 parameter combinations myself. You (or someone else) can create an issue here:
Issue raised: