Heritage Outpost locations, smaller versions of the coffee shop/bike shop Heritage Bicycle General Store.
Both will be in the lobby of FLATS buildings: one at the Norman Hotel, 1325 West Wilson; and the other at Lawrence House, 1020 West Lawrence.
Eater Chicago has come out with an article about them, giving some rough dates (August for Wilson and next year for Lawrence), and includes the detail that the Wilson Avenue location will have a customer window to serve commuters on their way to the train.
(Remember our motto, folks, "Nothing ever opens on time." We recommend taking all time estimates with a grain of salt.)