Not too long after I posted on my blog about the release of SSDT-BI for Visual Studio 2013 the download was pulled with a message that it would be fixed in a few days. After a few weeks, the updated download was made available on Friday. Not sure what the issues were with the original version, as I was not yet using it regularly (not lucky enough to work with any client going to SQL 2014 yet).
If you did grab that download when it was available the first time, you should upgrade to this newer version. The update did not fix any of the backwards compatibility issues with SSIS that I highlighted in my original post. Microsoft is saying that they have fixed the issue that was causing these breaks with backwards compatibility so that newer versions of SSIS and SSDT-BI will work with each other going forward. Based on how that was stated it does not mean that they will be able to fix the issues with 2008R2 and 2012 not working in latest versions of SSDT-BI, just that newer SSDT-BI releases should work with SSIS 2014 and later going forward.