That is nice. I like that! I never thought much of upgrading the Entune system until this week. I drove a fully loaded Raptor this week and my perception on features has completely flipped. Having Carplay would be great. Having the maestro system displaying relevant vehicle information would be amazing. Wouldn't need to get that Scangauge II I was thinking about!
If I PM'd you, would you be willing to send the specifics on your system?
Or ask here! Some of us may have the same questions.

eep:
I'm using the Pioneer AVH-W4400NEX, which I believe is the only Pioneer unit with
wireless Apple CarPlay. I took a chance on this not knowing if the wireless variant would be glitchy or gimmicky, but to my pleasant surprise, it has been 99% problem free. I'm a big fan of Pioneer for their headunits so I didn't try looking at other brands' offerings, but Maestro will outline which headunits will or won't work with their module.
This headunit's screen can tilt to avoid glare from the sun, but with the Scosche dash trim, the mechanism to tilt the screen is blocked. This isn't a problem for me because I don't use CDs or SD cards, whose slots are hidden behind the screen. And in the 4Runner I don't get too much sun glare coming off the screen. Another thing to note id that this unit, using the factory mounting brackets that came off the stock unit, would not fit in the Scosche trim piece opening at first. I had to cut slots in the holes of the factory mounting brackets so that the unit could be set further into the dash. This sounds worse than it really was though.
I opted to use the Maestro iDatalink ADS-MRR interface for the extra features and factory integration. It makes it easy to retain the factory backup camera and steering wheel control functionality. It also allows to you to program different functions to the steering wheel controls such as "long press Vol Down to mute music". This module also allows you to view data such as RPM, voltage, speed, engine load, temps, etc. and will calculate gas mileage. You can also change vehicle settings like you would with the Toyota Techstream, like opening all windows by long pressing unlock on the key fob. Using Maestro's HRN-RR-TO2 harness, everything between the headunit and factory wiring is plug and play. You do not need to cut/splice any factory wiring, just have to solder/crimp connections between the Maestro harness and headunit harness.
Full list of parts in my system (not everything here is necessary just to get CarPlay in your rig):
Pioneer AVH-W4400NEX - Headunit
Maestro iDataLink ADS-MRR - Factory integration module
Maestro HRN-RR-TO2 - Toyota specific integration harness
PAC USB-TY1 - Retains factory USB port functionality (AUX port no longer works though)
Scosche TA2106B - Dash trim piece (got it paint matched at a body shop)
Focal IS 690 TOY - Front door component speakers with dash tweeters
Focal IC 165 TOY - Rear door 2-way speakers
Alpine KTP-445U - 4CH 45w per channel amp for door speakers (went with this as it doesn't require its own separate wiring kit)
Rockford Fosgate P3D4-10 - 10" subwoofer
Alpine MRV-M500 - 500w monoblock amp for the sub
Rockford Fosgate RFK4X - 4ga amp wiring kit
Subwoofer enclosure, custom built
You will need to buy a factory radio antenna harness to retain FM/AM radio but I never listen to radio so I decided not to bother with it. Additionally, this system unfortunately does not use the factory GPS antenna or phone mic, so the new ones provided with the headunit need to be routed through the interior to your desired places. I have the GPS antenna simply loosely sitting behind the radio in the dash with no issues. The phone mic is on my A pillar by the sun visor. Note that these are both required; CarPlay won't use the mic on your phone for calls or voice commands, nor will it use the phone's built in GPS for navigation.
Let me know if you have any follow up questions!