Igor's LAB shows a PCB design that is meant for non-Ti RTX 4090 / 4080 SKUs. It still features a 16-pin power connector like the v-shaped PCBs leaked in March, but that does not mean that the SKUs using it will bolster 600 W TDPs. The latest report also includes an AIB development schedule that suggests the first cards may launch in September.
https://www.notebookcheck.net/Nvidia-RTX-4000-series-PCB-design-leaks-along-with-an-AIB-development-schedule-that-points-to-a-September-launch.624773.0.html