There is some chatter on the web whether or not AIB product will be available for the pending AMD NAVI series aka Radeon RX 5700 and 5700 XT. During the AMD tech days, we asked this question and got answers for you on it.
So yes, there will be AIB (custom) cards for the new Radeon RX 5700 and 5700 XT, however, these will not be available during launch in a few weeks, but roughly one month later. The thing is that AMD does mind AIB product to be available in early July, it merely is a matter of logistics. The information and GPUs went out to the AIB partners, but simply takes them a little more time to finish up their designs. The board partners will release the reference products on that date. Of course, you might see an off review before actual AIB availability but the general consensus will be as described below.
So AIB Radeon 5700 and 5700 XT cards is a definite yes, and they will become available roughly one month after the reference launch on the 7th.