The vanos bolt recall affects the n55 engine only if I'm not mistaken.
http://www.autoblog.com/2014/04/11/b...ars-worldwide/

Just got the letter from BMW NA regarding my vehicle affected by the Vanos bolt recall. Parts not avail yet and will be contacted once they are.

recall campaign 14V-176 Vanos Assembly Bolts

What are your driving?

This page, for example, leaves many questions unanswered:
BMW X5 Recall Information - BMW Recalls and Problems

I noticed on another board that someone with a 35i was going to have his driveshaft inspected. He did not get a letter but when he called about an appointment for something else they told him they would look at the driveshaft.

2011 3.5i base.

Not sure what questions you need answered...that info was the same pretty much in the letter. But assuming you will get a letter if it impacts you and BMW NA has your info.

Front driveshaft(read history in this post), no letter, just brought it in for something else and they noted it needed to be checked.