Any DOOM 4 leaks of any sort( except descriptions)?

Assuming they're unveiling it during the Bethesda Conference (E3), you won't see anything until then. Maybe they'll make some sort of countdown on the DOOM site but probably not. Sit tight.

I hope Bethesda doesn't cancel Doom 4 like they canceled Prey 2. I'm so worried right now.

They won't, because the situation is completely different.

The theory (which I believe is true) is that the whole mess with Prey 2 was because of Zenimax. Officially the game was cancelled because of 'quality issues'... but in reality Zenimax wanted to buy Human Head. However HH did not want to sell. So Zenimax tried an aggressive acquisition by blocking their work and bleeding them dry out of the resources, refusing to pay for the development by rejecting their milestones. Eventually HH had to call the quits because they wouldn't succumb to Zenimax.

However id are already a part of Zenimax. My personal theory is that DOOM4 is the 'last chance' for id to prove themselves. If it flops, we might not see another id game developed by id... but DOOM4 will come out, 100%.