DJI is one of the most ruthless companies in marketing.. it VERY likely that DJI is waiting for the Autel Evo to release, so they can one up them with the Mavic Pro 2.
Support competition!!! Buy the Autel Evo!!!!!

Who says DJI is delaying?
I never heard an official statement they would do anything in March

Only one source created a rumor about it.
Some Twitter post everybody (me included) was repeating.

Not saying you are wrong. DJI is very aware of the market.
Interesting time

I agree that competition is important, but the Autel Evo doesn't impress me to be honest. Overall design is weird, I don't like that gimbal/camera solution...looks way to exposed. Another thing is software, new companies are usually and naturally kinda bad in it.