Will be out around march
https://en-us.sennheiser.com/2-channel-receiver-live-audio-productions-digital-6000
Transmitters are here
http://de-de.sennheiser.com/news-sennheiser-kuendigt-neue-drahtlosserie-an
All in all it's the 9000 series without the uncompressed HD mode and about 30% cheaper. It will be compatible to the EK 6042 slot receiver.
I already heard the 9000 series transmitters in the 6000's LR mode thought the EK 6042 and was quite impressed by sound quality, especially dynamic range and frequency response. Despite Sony DWX /N the best sounding wireless ever in my opinion (no experience with Zaxcom though).
Negative: You need special rechargeable battery packs for transmitters. Expensive. There will be an AA adapter but normal alkaline batteries only work around 90 minutes with it.