Tough call.
You probably have some time between now and when they finally assign you a new crate engine or...whatever they decide to do for you. Given that yours hasn't had any problems and is still under warranty, you could put it off as long as you can. This will give you time to see if any 2026 models have the same issue. I would guess we'll see the best deals from now until January 2026, so you have some time to think it over.
If it were me, and we start seeing 2026s fail in the same way, I would consider a different brand unless you are just going to stay under warranty and are OK with the risk. If you are sticking with Toyota, obviously this is advice doesn't matter 😃.
Looking at it a different way, there's the inconvenience factor and loss of value when having to deal with getting a new engine, lots of physical disruption and potential for problems when that many parts are touched under the hood/bolted to the transmission. So many things have to go right to make it perfect again like one that comes off the assembly line. While some people see it as a benefit to have a new engine, some see it as a negative on a carfax.
The easy button would definitely be to just get a 2026 before dealing with the hassle, let someone else deal with it, depends on your financial situation if you want to take the hit. There's also a case to be made if you wait too long, your trucks trade in value might drop more due to the "open recall". I'm not sure how dealers would view this for trade in value but having an open recall that hasn't been completed (new crate engine) might diminish value further because the dealer has to do it before they can resell. Currently there is no recall remedy so I think technically they might be able to resell it until there is a remedy, though I'm not 100% sure how they are forced to handle that with NHTSA, that could just be the rules on new vehicles.
Sorry I can't give you a definitive answer, you'll have to decide what's most important to you individually, I hope this helps.