AT&T's letter simply says Callvantage will be shuttered sometime in 2009, with more information at a later date.
The actual hard copy letter does not mention a specific timeframe, but the the on-line Disconnecting Your Service FAQ would seem to imply only a 60 day delay from notification to shutdown.
AT&T CallVantage® Disconnecting Your Service What are the various mediums you are using to reach out to these customers?
A combination of direct mail, e-mail and voicemail for 60 days.
-- A well-regulated militia, being necessary to the security of a free State, the right of the people to keep and bear arms shall not be infringed. »portscan.dcs-net.net »nature-pics.com
reply to NetFixer You can consider the mass mailing a non-specific 'pre-notification.' The "actual notification" will come at a later time (whether tomorrow or three months from now, who knows?). The deadline for any individual customer is 60 days after the date of that second communication.