Nothing new... really....
I don't really get the fuss about Rage/Linux not being release-day platform.
Linux was always was on-a-free-time-basis release which usually trailed the official Windows release by a couple of months (or more).
Given the relative size of the Linux market, we can only thank ID for taking the time to port their games to Linux (if it takes a year post-official-release), let alone releasing their code.
In the mean time, hopefully, Id-tech-4 will yield interesting OSS games (or at least improve existing ones).
DEV-NG: Intel S2600C0, 2xE52658V2, 32GB, 4x2TB, GTX680, F20/x86_64, Dell U2711.
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