Google announced that it has either launched or updated 3D imagery for 50 cities in Google Maps and Google Earth.
"if you're using the new Google Maps, try holding Ctrl and then dragging the camera view around," Google says in a Google+ post. "This will give you a camera that lets view in any direction."
Recently launched cities include:
Anniston, AL; Auburn, AL; Barstow, CA; Bastrop, TX; Bend, OR; Birmingham, AL; Boulder City, NV; Buffalo Core, NY; Cape Girardeau, MO; Casper, WY; Cheyenne, WY; Chicago, IL; Chico, CA; College Station, OH; Delano, CA; Desert Hot Springs, CA; Dubuque, IA; Edmonton, NY; Enid, OK; Farmington, NM; Grand Forks, ND; Grand Junction, CO; Great Falls, MT; Hanford, CA; Healdsburg, CA; Helendale, CA; Hot Springs, AR; Idaho Falls, ID; Kelso, WA; Killeen, TX; Las Cruces, NM; Lawton, OK; Leeds, OK; Madera, CA; Malibu, CA; Merced, CA; Modesto, CA; Ocala, FL; Odessa, TX; Ojai, CA; Picture Rocks, AZ; Pittsburgh, PA; Prescott, AZ; Rapid City, SD; Redding, CA; Riverside, CA; San Angelo, TX; San Francisco, CA; St George, UT; Texarkana, TX; Twentynine Palms, CA; Victoria, TX; Winnipeg, TX; Yuba City, CA.
Google has a list of all cities where 3D imagery is available here.