VIA silently released the VIA 4in1 v. 4.51 Pro Beta driver. VIA Hyperion 4 in 1 driver includes four system drivers to improve the performance and maintain the stability of systems using VIA chipsets. These four drivers are: VIA Registry (INF) Driver, VIA AGP GART driver, VIA ATAPI Vendor Support Driver and VIA PCI IRQ Miniport Driver. For Windows NT users, VIA IDE Bus Mastering driver is the only driver to be installed to your system Read More

Releasedate is today, 01/29/2004, files are dated 01/01/2004.
It is not known what has changed in this version, any comments about this are welcome. VIA 4in1 v. 4.51 pro beta relase 29/01/2004 Thanks to Salix fyi.