Post from Steam says today/tomorrow. See.....
Update from Bethesda
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Almost all the issues with RAGE are hardware/driver related and not an issue with the game itself.
Please note the following from Bethesda:
ATI and NVIDIA are working on updated drivers that should be released today/tomorrow that will fix multiple issues.
Bethesda is working on an update to allow for users to customize their video options which will solve many of the issues users are having.
For the latest information please visit http://www.bethblog.com
Thank you for your patience with this matter. All parties are working as fast as they can to correct the problems with RAGE.