Michalek will be out 4-6 weeks with a broken finger:

http://www.post-gazette.com/pg/11297/1184569-100.stm

Since we have 6 defensemen, no one will be recalled but considering Bylsma seems to like to have 7 healthy D, I could see someone being recalled somewhat soon. Hate to see a solid defenseman like Michalek go down but I'm guessing it will be closer to 4 weeks than anything