ADK 1511 – don't use it quite yet
Pretty minor... its not as if many people that use SCCM would use the ADK.... only 100% of them.
Some interesting comments at the bottom of the page...
Previously I was one of those who thought Microsoft's patching and release quality testing was getting better... and it was... for a while... but between this, the MDT 2013 U1 buggy release, multiple exchange RU's that got released and re-released, the windows update that killed outlook... well, I think MS might have some QA issues.