NeoGAF user Hawk269, an Xbox One June update beta tester, reports that both Forza 5 and Ryse: Son of Rome load up faster when using an external HDD, an option which will be added as part of the update.
He commented:
"When I booted up Forza 5, now running off of my external HDD my wife said that it seemed to load up faster. I also noticed this, but did not time it. We have two Xbox One's in our house and I have the same games loaded on both, so we decided to test it on one of the games that I feel has very long load times, Ryse: Son of Rome.
"For the game, I am using the beginning of Chapter 4 titled "Trial by Fire".
- Trial by Fire Load time using Internal HDD : 1.01.55 (one minute, 1.55 seconds)
- Trial by Fire Load time using External HDD: 44.49 seconds
"So I am seeing about a 15-16 second improvement in load times for this level of this game. Since it is late, we did not test more games, but since we are waiting for the arrival of our other external HDD, we will do some more tests tomorrow and update this thread, But based on our first timed test, definitely an improvement in load times."
Hawk269 did not test other games but if these are anything to go by, Xbox One users should be seeing load time improvements across the board.
The Xbox One June update will also add the ability to use real names.