Following his raise in AAPL's 2012 price target to $675 earlier this morning, UBS analyst Maynard Um sent out a note to investors today maintaining a "Buy" rating on AAPL after observing and interviewing buyers in line to purchase a new iPad at some flagship Apple stores in New York City. He said he expects Apple stores to be sold out of iPads over the weekend but noted a number of shifts in buying patterns among the crowd compared to a similar survey done at the iPad 2 launch.