We can't find any info about Tyan and Iwill being affiliated, but Tyan today announced it will begin shipments tomorrow of its dual Xeon Thunder i860 motherboard. From what we can see, the board is just about identical to Iwill's DX400-SN. In addition to supporting two Xeon processors, the Thunder i860 can handle a total of eight RIMM sockets for up to 4GB of memory. It includes dual-channel Ultra160 SCSI, 10/100BaseT Ethernet, two 64-bit 66MHz PCI and three 32-bit 33MHz PCI slots, and an AGP Pro slot. The Intel 860 chipset supports a 400MHz system bus and the board is configured in an extended ATX form factor (13" x 12").