The 22nd of January, I received an email with the subject \'Important: Steps to migrate from discontinued Documents List API\' from Google Apps .
Imp
Short answer is no.
The Docslist API is being discontinued because it has been replaced by the Drive API. In the case of the Spreadsheet API, there is no replacement API (yet - maybe one day), so it remains supported.
The only gotcha is that at some point, only OAuth 2 will be supported for authentication/authorisation so if you're using OAuth 1 or u/p, you have some work to do.