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ICPSR used to have a FastTrack service where some data were released fairly immediately – before normal ICPSR processing. I cannot seem to find this anymore.
ICPSR has changed their treatment of FastTrack data. FastTrack was a ftp service, not quite so familiar to users anymore. So now ICPSR creates a basic metadata record for FastTtrack studies and releases them through the normal ICPSR download system:
The first link on that page is to all studies updated or added within the last 90 days. Studies marked with “new" were just added to the ICPSR collection.