Eh, it just came out last month, give them some time.
In fact Intel had supply issues with their 9900K at launch too, for at least a month or two they were often out of stock at the major retailers. If getting ahold of a 3900X is still tough by next month then maybe that's cause for concern.
I would agree that Intel is more mature on the BIOS side of things. AMD usually has launch issues that need to be ironed out with UEFI updates. But, if the past few launches are any indication, they've always got things fixed.
In fact Intel had supply issues with their 9900K at launch too, for at least a month or two they were often out of stock at the major retailers. If getting ahold of a 3900X is still tough by next month then maybe that's cause for concern.
I would agree that Intel is more mature on the BIOS side of things. AMD usually has launch issues that need to be ironed out with UEFI updates. But, if the past few launches are any indication, they've always got things fixed.