I get color noise and banding when converting Canon EOS 70D from .cr2. to DNG, even with the latest update of Lightroom/CameraRaw. The raw pictures are ok, but when converting them after import the above mentioned problem appears. Adobe, can you please fix this in the next update?
You're not talking to Adobe in this forum, you're talking to other Lightroom users.
If you'd like to submit this to Adobe, you can do this here: http://feedback.photoshop.com/
Also, if you're going to do that, you ought to include screen captures of example(s) both before and after DNG conversion, zoomed to 1:1 so the noise can be seen.
Adobe, can you please fix this in the next update?
Fix what? You haven't demonstrated that there's a problem with Lr, and I can confirm that the behaviour you describe does not happen when I convert my 70D files to DNG in Lr.