Knowledgebase : Sketch - Whats New 2014
LASSO SELECTION You can select items in the graphics area with a lasso. You can lasso-select items in sketches, drawings, parts, and assemblies.
PATH LENGTH DIMENSION:  You can set a path length dimension to a chain of sketch entities. You can set the dimension to be a driving dimension, so that when you drag the entities, the path length resizes consistently.