Michelle,
On February 29, Microsoft will release the Consumer Preview of Windows 8, which has much more features than the current Developer Preview. This will mark the debut of the Microsoft Store and also the Mail Client (it wasn't there in the Developer Edition).
You should download it and give it a trial. The Metro interface is new and while some find it groundbreaking, others have sworn it is unusable. The new Windows 8 designed is designed to work on regular computers as well as touch screen, so you will see the whole interface has been tweaked to accommodate touch as well as keyboard and mouse.
Beware, some legacy applications may not run, but the most common ones like Office 2007 and 2010 will run on the traditional desktop without any issues. There will also be some Store only apps, but these may not be essential, but are interesting. Social Media aggregation Apps like Panorama and Tweetdeck bundled with Windows 8 are really good.
The OS also has a new application execution stage that suspends idle applications in the background at their current state without using any resources,
So try it and form your own opinion.