The original Wreckfest came out of Early Access on June 14, 2018, and its Steam Early Access phase started on January 15, 2014. If you meant the newer Wreckfest 2 alpha/early-access build, that launched on March 19, 2025.

[15] [17][15] [6]
Version What happened Date
Wreckfest Steam Early Access launch January 15, 2014
Wreckfest Full release June 14, 2018
Wreckfest 2 Early access launch March 19, 2025