Is it possible to download a zip file for the ermine beta update?

I'm still dragging my foot in this and would like to give it a few days before making a decision whether to do the update and risk messing my functioning big eDGe. I'm avidly following the posts about the ermine experience and am weighing the pros and cons in view of a big deadline that I have soon. I'm afraid my eDGe will become problematic and I'll lose focus (a case of once bitten twice shy ).