Today, during the New York Comic Con "DC Nation" panel, Venditti confirmed that we will be meeting the Kryptonian version of Katar Hol in Hawkman #8 which will be out this January.
For those not caught up on Venditti's run of the character, he discussed his idea for an ancient Hawkman at SDCC:
Venditti is writing Hawkman with art by Bryan[...]