.net - Entity Framework upgrade from v4 to v4.1(RC) -

is out

Can an upgrade break the 4 to 4.1 changes? Now is there any good reason not to start working on upgrades? ? Any warning?

You do not need to upgrade. EF 4.1 is the only additional library, it is primarily included

DbContext API
Code-First Development Approach
The code- Not what you are looking for is the moment. If you are using the ObjectContext API and EDMX + POCO T4 template, then you can continue with it. EF 4.1 from its perspective has only different APIs to do the same function. There are some benefits (but there are some missing features) but there is no reason to work on the project already running. You can use some features from EF 4.1 in parallel with your EF 4.0 code - for example Insert strong code available on the IQueryalbe interface extension method.

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