No, they would not disappear, there is a specific procedure in the ICANN new gTLD applicant guidebook for this issue. No change for the end user but is is possi

No, they would not disappear, there is a specific procedure in the ICANN new gTLD applicant guidebook for this issue. No change for the end user but is is possible that transfers or special zone file operations would not work during a certain period of time. This has not happened yet so...difficult to answer.