Well, it seems that there are too much questions for this wave.
Firstly, 75145 is rumored to be "Anakin's Podracer", now the pre shows the black/red thing.
Secondly, 75147 is rumored to be $70, now the pre shows the price may be $50-60.
Thirdly, 75149 is rumored to be $100, but the pre shows it's more likely to be $80, just like the Poe's X-wing.
And it seems the rumored Resistance X-wing AND Encounter on Jakku may just be the same single set, the 75149.
I compare the 75151 prelim with 8098, it seems 75151 is a little scaled down.
Take the AT-TE as an example, 7675 and 75019 share the same price, but 75019 is a little scaled down.
More pieces have been used for better details, but the scale is disappointed.