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?

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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.

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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).