As you and your team become more adept at managing each release cycle it is important to factor in extra time for unpredictable work based upon customer feedback. There are plenty of product managers that create a roadmap and never learn to adjust that plan based on anything external. They make a plan, put their heads down, and power through that plan without actually understanding how the market is interacting with the product.

A lack of time and need to push out an update becomes an easyexcuse for not allowing alterations to the roadmap based upon what customers want. It is important to factor in extra time to each release cycle specifically for focusing on ideas brought to you by the people who matter most; your customers. Doing so will minimize the problems to come and create a roadmap more in tuned with what your customers want.