The Msport package is just items like steering wheel, rims, foot rest, etc. It's basically body add on that has an "M" insignia.
This site will be for a true X3M. Now you get the higher performing engine, suspension, etc.
Msport has been an option for years. The BMW Motorsport (M) division is just coming out now with a true X3M.
My 2013 has the Msport adds as well. I put a Dinan tune on it to help but I'm considering this X3M now as a replacement.
1979 Porsche Tobacco Metallic 911SC
1996 Porsche Guards Red 993 C4S
2005 Porsche 996 Turbo S
2003 BMW Ti Silver M5
2013 BMW X3 35i Carbon Black M-Sport