Way too much nonsense in this thread. Very disappointing to see.

-yes, you can initiate a timer with throttle input with Sanwa radios.
-yes you can program different profiles via physical switch within the same model memory with the mt12

1) has any info been leaked yet confirming things like adjustable wheel position or better screen quality, or a more “pro” version of this radio to be released in the future? Or is this purely speculation at this point?
2) is there anything the MT12 offers that Sanwa and/or Futaba can’t do at this time? If not, it seems this is only beneficial to newcomers to the hobby. There’s no reason to switch if there’s no new/additional benefits. Latency is effectively equal. Range doesn’t matter even if it’s better; if you can get around the track you have plenty of range.

Nothing to leak, it's available open market. Radiomaster's modus operandi, for literally every radio they've ever made, is to release upgraded versions, usually inside 6months of the release of the first.

Regarding range, there are forms of surface RC that does need the range. Circuit racing is not the only form of surface RC.

Just based off the marketing info so far, there are a few selling points of this radio over Futaba/Sanwa. First, the price/performance. It doesn't beat Sanwa latency, but is a hell of a lot cheaper for allegedly comparable latency. It's like half the price of the Sanwa MT-5 and price comparable with the Futaba 3PV, the cheapest Futaba radio that I'd deem race worthy. Secondly, open source. This is a very niche feature that the vast number of users won't be able to benefit from, but it does interest me. There are things about my M17 software that irks me. If the MT12 allows me to change the software myself then I have the option. Thirdly, hall effect sensors over potentiometers. I've seen a lot of people having to replace their potentiometers, I've done a replacement on a friends radio myself, and my one has shown signs that it might need replacing soon.

Assuming we can take their claims at face value, there's one real kicker that will be important for racing: ergonomics. They might be good, but for a radio with this level of features at this price point, they probably weren't able to invest too much on that front. The 3PV comes to mind - the latency is more than sufficient for racing but the throttle trigger feel is downright awful.

Hall sensors vs. pots is a sensible comparison. More range for boats or whatever also makes sense. I’m not sure it’s worth ditching a $500 radio for a $100 radio to prevent potential future pot replacements for a couple bucks. But for a newbie that needs a radio certainly part of the factors to consider.

I guess a better way to ask the question would be this: Are there any edgetx features that allow for adjustability above & beyond what Sanwa or Futaba offer? Rather than linear curves for example are there parabolic/custom curves that can be implemented on the MT12 but not Sanwa or Futaba? Telemetry sounds like it’s limited to rx voltage regardless of the radio manufacturer at this point in time. If EdgeTX offered additional telemetry data right now for example, I’d think that might be a reason to switch. I just don’t think that’s the case which is why I’m curious to learn otherwise if anyone has that definitive info.

You're probably not the core target audience if you already have a $500 radio. Though the "future pot replacements for a couple bucks" comment is interesting: a replacement pot for the M17 steering alone costs about a quarter of the price of the MT12. They aren't cheap.

You can play games on it. Mine came with Breakout where you control the paddle with the steering wheel.

I just learned about Radiomaster a week or so ago, so I don't know a lot about them, but the radio I plan on purchasing next the TX12 appears to have hit the market sometime around 2020/21 and there is already a MKII, end users wanted things that the initial release didn't have and Radiomaster listened (how refreshing). The TX12 MKII was released in 2022/23.

Radiomaster appears to be a company that releases a product and listens to end user feedback, so I'm going to assume that the MT12 is Radiomaster testing the waters in the surface world and they will release a pro/updated version as soon as they figure out what people want. The TX16S MKII has a color touch screen and appears to be a very popular radio.

I have a the 4-in-1 version of the MT12, using a cheap Radiolink receiver I have also battery voltage. Which you can set warnings for, or have the Radio read out voltages on the press of a button. You could even limit throttle when battery is low.

Other Telemetry, I have a ton of FrSky sensors, like per cell voltage and amp sensors, with those you can even have a Watt readout on screen if you want. Useful? Probably not, maybe when testing a new hot motor. But sensors like that you really don't want to put in a racecar.

If my TX could tell me my 4S car voltage (even just total, not per cell) that would be incredible. Right now I believe my Sanwa radio will only tell me RX voltage which is limited by the ESC. It’s cool for 1:10 scale and nitro 1:8 because it uses 2S batteries but otherwise I’d certainly like to be able to know where my 4S voltage is while I’m on the drivers stand.
Motor temp and ESC temp would also be good metrics to have, not during a race but to datalog it and be able to look back on it would be nice. I’d use it if it was available to me. That’s sort of why I’m trying to figure out if this MT12 offers anything above & beyond current radio capabilities. With claims like “it’s going to put Futaba out of business” I just can’t understand why or how that could be if it’s not better or different.

I use a Radiolink R7FG receiver where you can run a wire directly from the battery into a voltage sensor port. It can read up to 6S.
I have that on screen and with a button have it read out to me.

That’s fantastic, thanks for sharing! I’m assuming that’s the 4-in-1 version, not the ELRS protocol?

The ELRS receivers have the voltage sensor built in as well.

i ran the elrs version yesterday and was impressed with it. i have been racing all forms of Rc for 20+ years and owned all the high-end radios. This thing is on par with them. i wasn't doubting the ELRS Stuff though as i use it in my planes helis and FPV Drones. if you don't know edge TX is fully customizable. the range you will get with the elrs system is hands down the best out there. I'm very happy with the mt12.

Yes, mine is the 4-in-1

I'm getting nervous about my planned purchase - just picked up a fully race ready B6.4D and only need a radio. It's between the MT12 and NB4 - sell the MT12 to me, I value the open source and customer centric development but I also value the proven NB4 and know that the closed source model means I'll not have to get my hands dirty programming missing features