Going to post some brief impressions having spent some "considerable" (see: ignores all else in life) time with this in past 3 days.
UI: Works wonderfully with my voice commands. Lags more than I would like between apps (friends, TV, my profile, etc) but still very smooth. My only complaints are that it's a new ecosystem and, thus, can be hard to navigate at first even with the option to pin to home. With that said, some streamlining here would help considerably and I'm sure it'll get better.
Watching TV:: Personally, my favorite feature of the UI. Works flawlessly. Sounds great. Looks beautiful. My DVR recordings are darkened and sound output there is stereo. Being that I'm new to Cable TV, I'm unsure if this is a DVR or Xbox issue. Everything else works fine. The TV Guide doesn't pick up on a few channels that my cable box does. Hope that gets fixed too. Voice commands for navigating the TV Guide is a mess right now.
Ryse: So, having swapped so many disks in and out of both my PS4 and Xbox One, for some reason, the game I was dreading most winds up being the one that is in my tray the most. If I can summarize this, i would describe it as an arcade brawler with 'through the roof' production values. Everything from the beautiful music, visuals, set pieces, mo cap work and acting is done so very well here. It
may be good enough to have you overlook everything else that's been under a lens for past few weeks on this site (QTE context, enemy variety, etc).
With that said, I find the combat to be addictive when you start to learn to control the flow of the battle. Being surrounded by 5-7 barbarians and setting up double executions while avoiding your combo chain from being broken is a thing. Yes, you can button mash your way here despite the suggested color QTE, but there is still very much a lot in your control. The game also has a sense of urgency and, often, dread to it that keeps me going. I want to protect my men, I want to unleash two executions, I do want to see the story through, and I do want to upgrade all my executions and skills.
Forza:: the game I was anticipating most and why I leaned on Xbox one as my first next gen console choice (Though I did buy PS4 too). Plays really well and the rumble in the triggers are fun. Love playing in "cockpit" mode. With that said, a tad disappointment sinks in for me. 14 tracks (?), very very generic music (really not so much of an issue once I get my own music on the box), some very slight screen tearing on roads for me catches my attention and maybe missing some thrills here on some of these circuits. Some of the magic is lost and I cannot, for the life of me, put my finger to it. I think variety may be it. I get out of one league (which can have up to 6 races) in one circuit only to see that there's more before fully completing that circuit but I keep asking what the differences are if the tracks are all the same.
Mechanically, however, it is rock solid.
Dead Rising 3: I wish I could offer some insight here but I'm running into an issue wherein the game kicks me out to UI at the exact same time lapse and location in game. Unsure, but this may be disk related. Tried reinstalling but to no avail.
Summary: With all that said, I'm absolutely loving this console. I hope they work out the kinks, streamline the user experience. Still can't help but hope that they upgrade the specs later but wishful thinking
Going to pick up Crimson Dragon (I've played Orta more times than I can count) and Killer Instinct next week.