The N54 is getting replaced by the N55!!!
 

BIG NEWS everyone. I just read an amazing article that basicly says the "old" Twin turbo engine from the 135i and 335i is now getting changed for a new single turbo engine that puts out the identical amount of power.

I am forbidden by the owner of the site from posting links to the information but trust me, do yourself a favor and try to find the information from google or bing. Its worth the read and very interesting about the direction BMW is going to take!