The update to Symbian Belle FP 1 will be available only for Nokia 603, 700 and 701 , but the first generation of smartphones S ^ 3 will not be abandoned.
As has happened in the past months with the S60 5th edition, Nokia said on its support forum that the N8, E7, E6, X7, 500, C6 and C7-01 will continue to receive updates and bug fixes.
So, always hoping in community work, the first generation of S ^ 3 will still be supported in a formal way for a long time.
More info at discussions.europe.nokia