Not that we didn't already have a good idea of what to expect. With the new 3-Series' basic body shape, the extended roof and liftgate of a wagon, and now, M Sport package accents, it's a predictable design--but still interesting for wagon fans. The M Sport package adds a definite dose of aggression to the look, with more sculpted bumpers and side skirts, larger air inlets, and, though not yet spied, likely interior M-themed upgrades as well. It also appears to be nearly identical to the M Sport packaged launched with the 2012 3-Series sedan.
It's worth noting that the M Sport upgrades appear to be different from the M Performance range unveiled for the 1-, 3-, and 5-Series earlier this year, potentially offering buyers an intermediary step between the M Division-styled upgrades and a standard 3-Series.

2013 BMW 3-Series Touring (Sport Wagon) with M Sport package spy shots
Inside, expect more of the same BMW 3-Series design and equipment options as you'll find on the new 3-Series sedan.
Now for the downer: the 3-Series Touring/Sport Wagon may not come to the U.S. at all. Instead, we may get the 3-Series Gran Turismo, much in the way we lost the 5-Series wagon and gained the 5-Serits GT.