Cabin John Shopping Center & Mall, which has been owned by Carl M. Freeman Cos. since it was built in 1968, is up for sale. Freeman, a family-owned business with a dozen other commercial properties in its portfolio, confirmed this week’s report in the Washington Business Journal but declined to comment further. So did Eastdil Secured, the investment banking firm that’s been hired to market the property. In the meantime, it’s business as usual at Cabin John. For dates and times of this month’s concert series, see the ad below.