If you get an aswer to this then please let me know as well. I have been goign crazy searching internet , asking the same question on various forums etc. Some say end of this year , others say fall 2024. Also with all the EV competions hottening up do you think these prices will be the same by end of this year ? If not then whatever money we lose by buying now ( HW4 making HW3 obsolete) will be offset by the increased prices.
We do know that the Model 3 Highland refresh is coming later this year. Probably sometime in Q4. That will include HW4 and the add'l cameras it will have as inputs. There are a number of other improvements that are also included in Highland, plus exterior styling changes.
The Model Y refresh, called Juniper, won't appear until Q3 or Q4 of next year. I can't wait that long to replace my totaled MY. If I tried I'd just ensure they put it off until 2025. What I'm hoping is that it won't make sense to Tesla to wait that long to put HW4 into MY. Perhaps they will start putting HW4 into MY around the time Highland is released or soon after. If they were to do this, I'd hope they replace the existing cameras with the new 5 meg pixel cameras now used by MS and MX. If by some miracle this was available late this year, I'd buy one, get the tax credit and keep it for a year then sell or trade in for a Juniper MY. By then Texas GF should be doing the newer colors that Giga Berlin now offers.
Whenever I learn of new info on timing of HW 4 replacing HW3 in Model Y's I will post it back here.