The Komachi Insider mentions at least 7 desktop ARC table models, including A770, A750, A580, A380, A350 and A310. As noted, this is not yet confirmed, but the SKU A770 8GB is really mentioned for the first time.
The full characteristics of the upcoming ARC A series are still unknown and, most likely, will remain those over the next few weeks as they approach the launch. What we know is that Intel plans to release a "limited series" Arc Alchemist cards for desktop PCs may imply that it will be a kind of flagship model with the highest performance. Previous leaks assumed that this part can be called Arc A780, but for some time we have not seen any leaks of productivity associated with this part.
The ARC A770 desktop model with more than 12.7 GB of video memory (therefore, most likely, the option with 16 GB) appeared 10 days ago in the Geekbench leak.
It seems that this confirms that the A770 will be equipped with a full-fledged ACM-G10 graphic processor with 32 XE cores. However, Komachi tweet suggests that Intel can plan another part of 16 GB of video memory, that is, 8 GB. It would probably be reasonable if this part had preserved a 256-bit memory bus.
At the moment there are no signs of SKU 448 EXECTION UNITS (28 XE-CORES), which were really featured in some leaks. Although it can be assumed that the A770 8 GB or A750 would be good candidates for this configuration, but, again, there are no leaks confirming it.
Twips Komachi includes a part of A350, which is not mentioned after the Intel driver leakage. It was supposed to be a trimmed part of the ACM-G11, possibly with 6 xe-core. Nevertheless, it can be assumed that the A380, A350 and A310 will have 8, 6 and 4 xe kernels, respectively. All these parts refer to the initial level series, calculated no more than the performance of RTX 3050 / RX 6500.
At the moment, Intel has not confirmed the date of launch of the ARC Alchemist desktop series. The company officially plans to release a limited SKU series this summer, while rumors suggest that the ARC ARC series desktop is postponed to the end of the third quarter.