It’s a Lego “Ideas” set which is where fans build example sets, other fans vote on them, Lego examines them, determines if they can get the license if needed, and then rebuilds them for production.

Very many interesting sets, and some are now in stores (saw the Lego Office set at a Walmart, can’t wait for that to clearance and I’ll grab it root sweet)

Lego Friends is also the name for a theme built in-house and designed to appeal to girls (though the sets are not overly ‘pink’ if you will, and quite well designed as a “city”) by replacing the mini figs with mini dolls that are more realistically proportioned. It has been very successful and arguably has replaced much of Lego City (the boys I know have no problem mixing mini figs and mini dolls, the girls prefer to keep to the mini dolls).