You can still develop with VS 2005, but the EPiServer Visual Studio integration is only for VS 2008. Which means you won't get the "Create new Template", "Create new plug-in" support etc. in Visual Studio.
Development is still the same, just less help from VS in place.
/Steve
Hey,
Is VS 2005 still supported with the release of CMS R2, or is only VS 2008 supported from now on in a development environment?
Thanks,
Niklas