Lexus will be adding a NX300t or a NX350. Wishful thinking!
Well, Toyota
did register an NX 300 (no "h") trademark just over a year ago. Might they deploy it starting with the upcoming NX facelift? And, if so, what does it mean? Here are the possibilities, ranked from most to least likely IMO:
1) As Lexus moves away from its honest 200t badging for its turbos to BMW/Mercedes/Lexus hybrid-like arbitrary equivalencies, 200t=300, and, thus, NX 300 is nothing more than the new badge for the NX 200t. It would be nice if the 8AR-FTS would get a little power boost over its current 235 in that application.
2) NX in North America gains a third engine option: a low-output version of the 2GR 3.5-liter V6, akin to the 255 hp version of the 2GR-FSE 3.5-liter V6 used on the IS 300 AWD and RC 300 AWD. It would make the NX smoother and more properly Lexus-like, plus making it a worthier and more direct rival to the Acura RDX. And, by using the lower-output version of the V6, it avoids stepping on RX 350's toes, which, being larger and heavier, uses the more powerful 2GR-FKS. (See: Mercedes-AMG and Porsche playbook, which uses detuned versions of their engines on their smaller and lighter cars in order to avoid cannibalizing sales of their larger, more profitable models).
Much as I'd love for this to happen, I think it's far less likely than option 1.
3) Lexus puts an actual 3-liter V6 in NX, be it an updated 3GR 3-liter V6 (an engine that lasted all of one year on the 3rd-gen Lexus GS 300) or an all-new 3-liter naturally aspirated V30A-FKS V6 engine derived from the new LS 500's V35-FTS 3.5 twin turbo. Now
this would be somewhere between wishful thinking and a very long-shot possibility.