Not officially but some local Detroit Nissan/infiniti dealers are bringing some cars in for display so there will be a presence. If I was a local Nissan/Infiniti dealer, I would sure want some cars there...... so it makes sense. Unfortunately no new Cube or Z. Hopefully a GT-R makes a stop.
Link: http://www.autoblog.com/2008/11/29/local-detroit-area-nissan-and-infiniti-dealers-to-invade-auto-sh/