The NYSE publishes two lists of issues pending delisting from the Exchange:
An issue is added to this list upon the Exchange's filing of a Form 25 with the SEC and remains posted until the application to delist the issue becomes effective with the SEC (generally 10 days).
An issue is added to this list one business day after the exchange is notified of the issuer's intent to voluntarily withdraw its listing by filing a Form 25 with the SEC, and remains posted until the issuer's application to delist becomes effective with the SEC.