Very rare useful tweet:
Supposedly currently in testing at McGregor. Moved a lot of stuff to internal channels, idea being not needing the current engine shielding and CO2 purge, all together quite a few tonnes off the dry mass. Probably NET 2025 until it sees action. In one of these, first article started stacking in the last couple of weeks:
Payload section is a bit shorter, to supposedly carry 300t more propellant. Smaller, more leeward forward flaps, changed the heatshield too: allegedly stronger tiles, and an ablative backup layer under the hotter zones (windward and flaps). In the meantime, they stripped the heatshield off of Flight 5's ship and retrofitted this new iteration. Speaking of, all still points to a booster catch attempt on F5:
Also in the meantime, the old vertical tank farm is completely gone, and the new tower is 2/3 of the way stacked (in # of segments, not height):
Same height, base is a couple meters taller, shorter chopsticks as at 39A. Pad design unclear, they're doing something new, speculated to be more like a flame trench but incorporating some of the steel plate idea, probably. Recent FAA doc suggests the top of whatever the mount looks like will also get deluge, as the current one is getting cooked every flight by the pitch over. Now seems clear why they demolished the legs at 39A, but no new launch mount to speak of so far.