Starcraft II: Heart of the Swarm will be a little saddened to learn that beta will be closing down on the 1st March.
Blizzard announced it on the official blog, stating, "We’re incredibly thankful for the feedback and data our testers have produced throughout the beta, and we hope that all testers continue to practice, prepare, and pursue XP levels in the beta through the end of February."
The publisher did add, "It is important to note that we will continue to operate a private beta test until Heart of the Swarm goes live on March 12. We will be working with our eSports partners to ensure that they are able to feature the new expansion in professional StarCraft II matches after March 1."
Starcraft II: Heart of the Swarm is due to be released on the 12th March 2013.