People have been advising to downclock your card by ~50 Mhz to avoid the crashing issues if you're experiencing them, but I've missed a few days of reports on it so I'm not sure if that's still the advice being given out. It's early days, and the manufacturer's and NVIDIA will find a solution. There's a solid chance that the smartest folks of the community are already working on BIOS updates and workarounds for the issue to prevent customers needing to RMA.
If it's not fixable with drivers and BIOS updates, AIB's will likely offer an optional recall to replace the affected cards (6x POSCAP) with a 20 MLCC+4 POSCAP versions. I would also expect they'll attempt to recover some of the costs from NVIDIA, though I wouldn't expect much success.
These sorts of issues are things that could be avoided if AIB's had been given time to actually get their products tested. From what we've heard, NVIDIA gave them very little time to get cards to market, so testing was brief. Add in the fact that NVIDIA didn't bother to provide them with drivers until the very last minute, it didn't bode well for being a flawless release.
It's one of those issues you can't predict. Not a single engineer would have been able to say that the POSCAP's would have been insufficient for the expected clock speeds. As far as can see on the paper, everything looks to be in spec. It is only through testing, revising, and retesting that the outcome would have been known.
Batches being sent to each retailer are 10-50 units each time, being sent every 3-6 working days, varying from country to country and retailer to retailer. In some cases, these unit numbers are spread across all AIB's, and in other cases, those batches are from specific AIB's. You might get a mix of 5 Asus cards, 3 EVGA cards and 8 MSI cards, or you could get 16 Asus cards of different models in their range. In some rare circumstances, there's reports of retailers getting the same brand and model for the entire batch (e.g. 16x MSI Ventus).
Pre-orders for the 3080 across the entire world are still being processed, so if you're not already on the preorder list, expect a lead time of around 5 weeks minimum before you should expect any to appear in stock and purchasable (based on statements from retailers in the UK such as Scan, who stopped all orders once they hit their availability estimates for the 6 weeks after release). Even then, you'll still have to be very quick.
Batches are being shipped every day, but they're not sent to every retailer every day, as a trickle of 2-3 cards per day doesn't fulfill a sufficient bulk of preorders at most retailers and ends up costing more in shipping than it would be worth.
Manufacturing capacity has already been increased significantly since release day, but there's room for more. Once there's sufficient stock on hand at retailers and in warehouses, it'll ramp down. That's standard practice, but it does mean you're going to be waiting a while.
On a sidenote regarding availability, I've had a big gripe with the entitlement of people. Everyone knew this was a huge release, but a lot of people went in absolutely expecting that they'd get a card before anyone else. I've seen people arguing on Twitter about "paying money and having no idea when they'll get their product and how that's against the law and blah blah blah blah blah blah blah", and I just wanna tell 'em to stop acting like the sterotyped Karen.