A post on the Guru3D.com Forums reports that AMD's recently released Catalyst 13.10 beta drivers contain the latest indication that Grand Theft Auto V is eventually heading to Windows PCs (thanks DSOGaming). User kn00tcn posts claiming to have found the following string by hex editing the beta drivers:

<application Title="Grand Theft Auto V" File="GTA5.exe">
    <use Area="PXDynamic">HighPerfGPUAffinity</use>
</application>