By Christina Farr SAN FRANCISCO (Reuters) – Technology pundits were quick to predict the demise of most fitness wristbands and smartwatches when Apple Inc launched its Apple Watch. Others, hoping for groundbreaking health features from a company whose Chief Executive Officer Tim Cook spoke of how sensors are set to explode, were left wondering whats in store for the product. Two people familiar with Apples plans told Reuters the company is planning to unveil richer health features and additional sensors in later versions, the first iteration not hitting the market until early 2015. The sources could not be identified because Apples plans for the watch are private.