A new DisplayPort 2.1 specification has been released—and, if the authors are doing their job right, your devices may already have been upgraded. Essentially, DisplayPort 2.1 is a bit like Thunderbolt 4—instead of a fundamental change or upgrade to the specification, the “new” specification is simply a less permissive version of the DisplayPort 2.0 specification. Both DisplayPort 2.0 and 2.1 serve as an alternative to HDMI, the other popular video interface on PCs. The only real change is that the more restrictive DisplayPort 2.1 specification more tightly aligns with both USB-C and USB4, whic…