Simply text your flight number to 466453 ('GOOGLE' on most mobile devices), and the status information will be sent back to you. Or text a specific airline name, and Google will send back the main phone number to call.
Flight information is via flightstats.com, and, aside from SMS fees, it's free. Nifty.
Google has also rolled out significant improvements to its mobile search. Generally speaking, I like it. The new interface is spare and relatively clean, while still retaining image search, news search, local search, etc.
My biggest beef so far: An advertisement, of sorts, for Google Mobile search in the middle of the results -- I'm using the damn thing already, leave me alone -- and an illogical ordering of search results, with stocks and images before core search. I'll accept that it isn't bad idea to sneak stock results in, but images before core search makes zero sense.