No its still a issue with DLP's as well. Each pixel is still surrounded by a tiny black line. You notice it mostly when you have a bright blue sky environment, which is where I have set my limit. Any image darker than this and the screen door issue reduces greatly.
My eyes are a bit sensitive on this issue, as I can also see the pixels on my 42" plasma tv (848X480) from about 3 meters away, I find it quite annoying.
Each to there own I reckon, to some it may be a issue, others may not even see the screen door effect.