Hey Magic,
Thanks for being a part of the beta, your feedback is really important to us, so keep it coming!
I've answered your questions inline...
1-) I can not edit the page content. Is this disabled in beta? 
You can modify the content for any of the front-end pages by following these steps:
- From the Admin, choose Pages & Navigation
- Select the page to modify and select the Modify Content button.
This opens the live version of that page in a new window, and since you are logged in as an administrator, you will see "Edit" icons that will allow you to edit that content.
The Edit icons will display whenever you view the live site while logged in as an administrator.
2-) I noticed a lot of JS errors at the bottom of IE while I was surfing around at the backend. Most of the time related to the mootools etc. Is Cafe Commerce IE compatible?
CafeCommerce is intended to be compatible in all modern browsers. If you can provide more information on where the errors display and the error message, we will take a look at resolving the issue.
3-) Are you gyst planning to add more "widgets" like sliding banner, newsletter sign up form etc?
Absolutely. We intend to update CafeCommerce quite regularly and you will see more features added from time to time.
