I am of the contention that most advanced features and UI functionality is either intentionally being developed separately or locked out with the registry. Check out this video:
The system is clearly in an advanced stage of development, but leaked builds won't prove this until they start moving towards integrating extensive UI features into the operating system. They may have branched out UI development into some far off place, which is what they have been known to do in the past. If they are working on an alternate UI for Windows besides all of the new touch screen inspired Metro UI stuff, you will not see this until they truly, truly want you to see it. Looking at the Microsoft inspired video, you can see clear and concise changes. The recent video that I posted about showed what I believe to be the Hybrid Boot feature. There will be many under-the-hood advancements that will make an upgrade worth it to me.
For instance, if the system is even 20% faster in benchmarks than Windows 7, to me, this would justify an upgrade. If it uses less memory, even better. AppStore? Sounds great. Its clear they are designing this as a major release, and as such, we haven't even seen the ARM incarnation outside a few videos. This will be a big release with a lot of features. Many of them have not been documented at all, like Hybrid Boot. You will see the plain jane Windows 7 UI until the time comes when they unlock the magic. When that happens, I believe we will be astounded. From a perspective of being reasonable, it will be good if the market goes 40/40 Windows 8/Windows 7. These are easily manageable operating systems. The massive kernel level improvements will be there. We won't have the bulk of Vista or the blunt-force trauma of downed XP systems. We get native USB3 support and the proliferation of eSATA devices. This is what we need. The future!
Windows 8 will come with Server's Hyper-V as a built-in feature! This will be a great OS from the looks of things. And its apparent they've reached a stage where they are ready to carefully show you these concepts. Leaked builds are also going to be checked builds. They're compiled in debug mode, they're not meant for demonstration, but are usually nightly compilations that are in the middle of the development process. There could be multiple branches and you're just getting winmain. So in no way can you judge totality of this system by looking at rugged leaked builds. They simply aren't designed for presentation or for use in any type of environment.
Sincerely, Mike Fara Microsoft MVP Windows 8 Forums
Operating System Windows 7 Ultimate x64
OS Service Pack SP1 6.1.7601 (Win7 RTM)
Internet Explorer Version 9.0.8112.16421
DirectX Version 11
Computer Type Gigabyte GA-X58A-UD7 v1
CPU Type and Speed Intel Core i7 Extreme 975, 3500 MHz (26 x 135)
CPU Cooling CoolerMaster Hyper 212 Plus RR-B10-212P-G1
CPU Idle Temp 43c
CPU Load Temp 60c
Motherboard Chipset Gigabyte Intel X58 + ICH10R GA-X58A-UD7
System BIOS Revision F7
System Memory Type 24GB G Skill F3-12800CL9-4GBRL
System Memory Speed DDR3-1333 (667MHz)
System Memory Clocking 8-8-8-22
Video Card Type and Speed SAPPHIRE 100315L Radeon HD 6850 1GB 256-bit GDDR5
Video Card Cooling Standard
Video Card Temperature 54c
Power Supply Unit (PSU) Rosewill BRONZE Series RBR1000-M 1000W
Computer Monitor Dell 2007WFP 20" LCD
Sound Card Realtek ALC889 @ Intel 82801JB ICH10
Speakers Logitech 2.1
Headset/Microphone Sony MDR-V600/Yeti Mic
Storage Controller Intel IICH10R 3400 Series SATA RAID
Hard Drive x6 CRUCIAL_CT128M225
Optical Drives Portable USB DVD-RW
Keyboard and Mouse MS Keyboard / Logitech G500 Mouse
Modem-Router Type Cisco-Linksys WRT610N
Network Adapter x2 Realtek PCIe GBE Family Controller
Printer Canon MX850
Network Speed 1GBit Internet / LAN
USB Controller Intel 82801JB ICH10
Gaming Console PS3, XBox
Anti-virus Software ESET Smart Security
Productivity Suite Microsoft Office 2010
System Install Date 1/1/2009
Windows Experience Index 7.6
Favorite Game Fallout: New Vegas
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