Thats doubtful. With the Zune they entered in the arse end of a declining market. With Windows Mobile 7 they already have a good base to work with. They would have to lose market share to fall to 2-3% of the market and every indication is that they will at least hold steady on their market share with this release.

Microsoft has some strengths coming in to the market.

1. Name recognition. Hands up if you know what Windows is? It happens to share the same name with their best / most favoured OS release to date.

2. They have some of the best exchange implementations for corporate users.

3. Rock solid security.

4. Xbox Live. Sure its worth only a million sales at best, but thats a million they would have otherwise not got. Also it gives them a leg up on attracting developers and selling content.

5. They are spending a lot of money. Sure it won't buy them entry, but it definately doesn't hurt.

XBox Live gaming is merely 1 more feature on their list of features.  It is, by no means, the best thing about the OS.

I hope your right but I believe your wrong.

What other adventages it has compared to android or iphone ?

Hell it doesn't even support full multitasking in the first release version (which is promised to be added later)

Multi-tasking doesn't mean shit(to me anyway).  The most downloaded app for Android is a damn task killer for christ's sake.  Ease of use and responsiveness are much more important for the majority of people out there.  If Apple's new OS didn't include it, it would still sell like gangbusters.

Advantages:

Trail mode for applications.  No creating a "Lite" version of your app in order to let people try your application out.

Better UI, this is opinion of course, but I absolutely love the ZuneHD UI.  Tiles are cool.  Pivot and panorama controls are awesome.  Clean, elegant UI.

Hubs.  Applications with similar functionality can be bundled into hubs.  Applications can also register as extensions to various functions on the phone.  Such as photos for instance.  An application registered as a photo extension can be accessed directly from the photo viewer.  Makes applications seem more cohesive with your phone experience as a whole instead of just silos of various applications.

Office integration.  Office is a big boy and WP7 is definitely going to play nicer with Office than any other device out there.

Sharepoint integration.  Believe or not, Sharepoint is a pretty damn big deal and a direct integration with it is definitely an advantage.

Skydrive.  All WP7 devices can keep their photos and documents automatically synced with their SkyDrive's 25gb of free space.

Zune.  All of Zune's functionality is available for all WP7 devices.  The Zune services are fantastic and definitely is an advantage over Android.

TellMe.  MS is leveraging their TellMe services for voice recognition.  Utilizing the cloud to enhance voice recognition capabilities is a good thing.

Hardware requirements.  MS is forcing phone manufacturers to meet certain specs.  This allows developers to know the absolute bottom line when developing their applications.

MS is in charge of updates.  Updates are not handled by phone manufacturers so you don't get the Android type clusterf***s when it comes to updating the OS on devices.  This and hardware requirements helps prevent the amount of fragmentation that goes on with Android as well.

MS development tools.

Dedicated camera button allows the user to go directly to the camera from anywhere, anytime.  Uses the proximity sensor so that you do not turn the camera on while it is in your pocket.

Basically, it appears that MS has finally realized they have a shit ton of good services that they offer and that they can be brought together to provide some great functionality.  They have developed a mobile experience developed around the mobile experience.  Almost a complete paradigm shift from icons and the way applications behave and look.

This is not related to the topic of discussion but it is related to a name on it.

I want to spread the word on the Dvorak keyboard: http://en.wikipedia.org/wiki/Dvorak_keyboard

It's the "fastest" keyboard in the world.

Pffft.    Android keeps eating up Symbian, Apple and MS  marketshare, and will soon take over the phone and eventually the tablet world.

Oh thank you so much for that.  You have saved me a ton of time making things RIGHT on this thread.  

Believe it or not, that is where MS has a HUGE advantage.  If you've ever used Windows Live,this phone is going to be a dream.  Don't even get me started on Zune.  Add all of the other services that people are actually used to (such as Office, XBL, etc) and MS has a means to leverage a ton of products (free and pay) and services to make this attractive to a ton of people.

And, for the record to EVERYBODY, the smartphone market is still in its relative infancy.  Most people DON'T have one (I sure don't), so there is definitely room for a player as relevant as MS is.  If this ends up being a 3 or 4 horse race (RIM, Apple, Android, HP, Microsoft) then that's great for us as consumers as we have choices and competition.

The only ones that can screw it up at this point are the OEM's and service providers . . . . . . . . 

There's probably about 50 milion people who used Live and like it (X360 gamers part of pc gamers). I don't know how much zune sold but i think figure might be lower than this.

Also John average won't even understand why 80% of this is important, for them biggest thing will Office integration.

Trust me level of technical ignorance is amazing in our society even among 20-30 years old gaming crowd.