I havent seen any fully X79/LGA2011 heatsink, i think first we might just see brackets as the Thermalright is doing with the Archon, Noctua was the first that i saw back when i order my X58/LGA1366, so i would check on them, but my guess is as times get closer to release we will see most manufacturers do brackets releases.
As a side not reading on the Archon.....
Large heatsink fin array provides dissipating area of up to 150*125mm, making complete use of the airflow, with 150mm 140mm or 120mm fan.
Includes one Thermalright TY-150 PWM fan
Fan-clips are compatible with TY-150 /TY-140 140mm and 120mm fan.[/color], Ultra low noise at 21 dBA at max rpm (50cm testing distance)
Interesting, i only knew about the TY-140, which i like a lot, so looking forward to this new 150mm fan.