There too are many rumors that have been circulating in the net for several weeks before Microsoft officially announce the release of this new operating system. Here, you would find almost any answer to your questions about Microsoft Windows 7.

When will it be available?
As we all know, Windows 7 was officially launched on October 22, 2009, and you can get it through retail and OEM. However, the availability may vary based on computer manufacturer, store, and initial demand. But Windows 7 RC (time-limited pre-release version) is publicly available now.

Can I upgrade my current OS to Windows 7?
You can easily upgrade to Windows 7 if your previous OS was Windows Vista and you don’t need to worry about your files, application and setting because the upgrading process will not change that items. Upgrading from Windows 7 Beta/RC might be possible but the process will be slightly different. Unfortunately, for Windows XP users, you really need clean installation of Windows 7 if you want to upgrade your OS.

Once I have successfully upgrade to Windows 7, can I downgrade to my previous OS sometimes later?
The answer is no. You can’t downgrade your Windows 7 to your previous OS. If you still want to do so, a clean installation of your previous OS is needed. However, there are good news to those Windows 7 Professional, Enterprise, and Ultimate users where they are permitted to exchange the Windows 7 license for corresponding Windows XP or Windows Vista license.

Is there any discount that I will receive on the final version of Windows 7?
If you’re running beta testers, you will not receive free discounted copies of Windows 7 upon its release. However, starting from June 26, 2009, buyers of new computers will receive a free upgrade to Windows 7 once the OS becomes available. There is also a price reduction for licensed users of Windows XP and Windows Vista where they can purchase a Windows 7 upgrade license at the reduced price.

How much Windows 7 will cost me?
There are several prices here; you will got different prices for upgrade and full retails.
Upgrade:
Home Premium: $119.99
Professional: $199.99
Ultimate: $219.99

Full Retail:
Home Premium: $199.99
Professional: $299.99
Ultimate: $319.99

What are Windows 7 recommended system requirements?
If you want to enjoy the full features of Windows 7, your computer should have at least these specifications;
1GHz single-core processor with 1GB of RAM (32-bits) or 2GB of hard drive (64-bits). Also, to get a fair graphical view, your computer should have at least 128MB of memory (for Aero Glass)

Original source at forums.cnet.com