Security in the new Terminal B is supposed to be quick and easy - in fact, it can be quite lengthy, given WN and a number of others (see above), and though there are umpteen lanes and new machines (yes, five millimeter wave scanners, and WTMDs plus body searches for those who opt out) but TSA sometimes only operates two lanes. January 1 2012 was crowded and it took 15 - 20 minutes or longer to clear security.
Though SMF stated last year there would be some kind of elite security queue, and there was none as yet in B at this writing, the updated information is that Terminal B has a priority security lane at the far left as you enter the TSA security area.
As well, the end of 2011, Dec 30 2011, saw the flaws in the "Automated People Mover" concept when a computer breakdown isolated the gates from the central terminal 7:57 - 10:22 AM; flyers were required to use the APM elevated concrete guideway (about a six minute walk) to access flights or arrivals.

(There were three documented breakdowns the first month of operation.)
The new Terminal B does draw lots of kudos for its free WiFi, USB and power at concourse seats, services and restaurants. ^