Entity Framework CTP5

I am starting a fairly complex web app and really wa开发者_如何学JAVAnt to use EF CTP5 but I do not want to shoot myself in the foot here if they make any major changes just before they release it.

I know there are a lot of people using it but was wondering if anyone is currently using it in development of production apps?

I'm pretty much committed to using Code First for my production app. I'm sure there will be a few breaking changes, but the overall API is stable. The MSDN ADO blog has just published a huge series of How-To's, so you can assume that they are nearing release and that there won't be any major changes.

I'm using code first in a greenfield environment. The domain model is working well with mapping so far. 1 month into using developing it and am only excited so far. No big roadblocks. The only thing is that enum support is very tricky. I did manage to get a working specification pattern developed as well. MyFoos.Where(specPattern.Expression).