Depends what you mean by obsolete?
It is still a current phone on Nokia's website and I am not aware that it will be removed, or that they are considering phasing it out because is reaching its end of life from a product and marketing point of view. Neither would I consider it to be obsolete personally, for daily use, or that it is sliding into a mid-range position.
What might be a little confusing is that Nokia have released the 925, but it is very nearly the same in regard to the internals with the exception of a 6th lens in the camera. Nokia have also set themselves on a blistering track of releasing new phones every few months, but these appear to be to fill markets where they perceive they are short of a model - they have a strategy of creating a model for a particular market. The opposite of Apple, who have a "take it, or leave it" approach and who have only just chosen to offer 2 current phones, instead of this year's and last year's.
It might be thought of as long in the tooth, but that doesn't equate to obsolete. What did you mean when you said obsolete?