Yes, there are still plenty of trainers that do 3 meals, but as Sassy said, they are typically coupled with IM (Intermittent fasting).
In fact, I have been doing IM for the last few years and will never go back to 6+ meals a day again. No snacks in between necessary. I eat at 1pm, 5pm and 9pm. I have prepped for a show using it as well and did very well with it. A friend of mine got his natural pro card after prepping with IF as well. A lot of us couple it with IIFYM (If it fits your macros) to make it a "life style diet" that Joe/Jane Blow will think is a normal diet.