High-rise at the Brookline/West Roxbury line?

Wicked Local Brookline reports the owners of the sprawling Hancock Village project, which straddles the Boston/Brookline line, have begun looking at ways to expand:

... One of the juiciest rumors is that Chestnut Hill Realty is planning to build a high-rise building on the site, which is currently home to squat two-story brick homes. Asked about the rumor, Geller and Zuker said they hadn't ruled out a high-rise development — if it makes sense for the community. ...