The press release states their first hotel in North America is in Vancouver, a city in which Fairmont Hotels dominate. The Fairmont family of brands includes (Fairmont, Delta, Swissotel and Raffles). Shangri-La's launching of its first North American hotel there was a likely a shot across the bow.
emathias' question above does raise a point for thought. The vacant hotel space (whomever fills it), will play nose-to-nose with the Fairmont and Swissotel (one way or another) and they'll be physically connected via the new pedway. Remember, the hotel space at Aqua was designed with significant input from the Fairmont Chicago's owner-Strategic Hotels as well as Fairmont management to have been a new upper echelon addition to the existing hotel.
SLIM (USA) does not state they no longer believe Chicago is a good market, however instead because of the economics the
Waterview Tower is facing they pulled out. The new Roundy’s grocery at the Lakeshore East Market Center was picked-up following a falling out of the same grocer at a previously committed-to West Loop location.