At a school nearby I saw the following sign regarding "Revitalization".
Their choice for the "swirl" logo reminds me of the original RTC (Revit Technology Corporation) logo.
It's also what the Revit Technology Conference logo is based on too.
Speaking of which, the conference opens in slightly over a week! Still some time to register if you haven't yet. Online registration remains open until Monday the 20th at the standard rate. Afterward it will be possible to register on-site at 4pm on Wednesday at the higher on-site rate.