Following the update I was getting JAVAC errors coming up in VS2013 error log. I researched this and appears that installing a higher Java version than 6 fixed it and indeed it did. All appears ok and the update hit the Play Store earlier in the week. Installs fine from new and there are updates taking place although on some devices they get an error during update saying Package file was not signed correctly. I have researched this and it says that it is because it's not signed with Java 6.
What should I do, I needed to uninstall 6 to sort the JAVAC error is VS but it appears that I should not sign anything unless you use 6..