MHL 2.0+ and HDMI 1.4+ will support 3D. While I'm not sure if DLNA does or not, I would guess that in its current form it does not.
My question is that since the EVO 3D only has MHL 1.0 (MHL 2.0 has not been formally approved yet) will it work for 3D? And if not Lets just hope the 2.0 update only needs a firmware update and not any new hardware.
As an aside, for this phone there is no HDMI port. The "MHL" port on the phone is just a micro-USB interface with an internal switching system that can connect either subsystem (USB or MHL) to the pins. When using it for video out you use your special cable and connect it to a standard HDMI port on a TV which may or may not be MHL ready. The only benefits of it being MHL ready are you get phone charging (without need for special adapter) and you get the ability for two way communication through the phone and tv i.e. remote control to tv can pause, play, etc.