Velocity is a measure of the amount of work a team can handle during a sprint, typically measured in story points. While it can fluctuate slightly from sprint to sprint, the goal is to have velocity stabilize over time, as this helps in forecasting future sprints and planning. An increase in velocity from 27 to 35 could indicate an improvement in the team's capacity to deliver, which should be celebrated if it aligns with the team's capabilities. However, a stable velocity over time is what typically matters for predictability and planning.