Here I attached the whole content of the email:
Dear Symbian Signed service user,
The Symbian Signed signing services are to be migrated and taken up by Nokia Corporation. Symbian Foundation will transition from a non-profit organization to a licensing entity, which means there will be changes in the terms and conditions of the Symbian Signed service.
This concerns your registration data (such as first name, last name and country of residence), and data which you have submitted to Symbian Signed in connection with your application (such as specifications, certificates, UIDs and any information associated with UIDs). The data is transferred so that Nokia Corporation can provide you with the Symbian Signed services. If you make any changes to such data, the changes will be visible also in the context of the Symbian Signed services. Your data and settings will be processed by Nokia Corporation in future.
To continue your use of Symbian Signed services, please accept the terms and the transfer of the data prior to 28th of February, 2011.
If you do not indicate anything prior to this date, we will consider you not applicable for migration and you will not be able to continue to use the Symbian Signed services.
Regards, Symbian Signed team