An upate for ACR is available, new is purple fringe removal. It seems to work very well.
ACR 7.1 and DNG Converter 7.1 Now Available for LR4 and PSCS6 « Julieanne Kost's Blog
ACR 7.1 and DNG Converter 7.1 Now Available for LR4 and PSCS6 « Julieanne Kost's Blog