I'm as excited about the rumors of improved desktop modes and video out support for the Pixel 8 as the next guy, but we've fielded these kinds of rumors before.
Currently the only phone I have that can run an Android 14 beta, AND has video out, just did this using the desktop mode in Android dev settings.
Which is even more broken than the A13 desktop mode, which was already almost nonfunctional from the A12 mode.
I really WANT Google to give us a Pixel 8 with a proper desktop or tablet large screen mode, but I'm not getting my hopes up until we see the phone in action.