Will my subscription renew automatically?

It depends on how you booked your Zattoo subscription. 

Premium subscription via Zattoo Shop:
Yes, your subscription will automatically renew at new conditions (new price, more recording space - more information here). You always have the possibility to cancel your subscription up to 48 hours before the scheduled auto renewal. 
Ultimate subscription via Zattoo-Shop:
Yes, your subscription will automatically renew at new conditions (price unchanged, more recording space - more information here). You always have the possibility to cancel your subscription up to 48 hours before the planned auto renewal. 

Premium/Ultimate subscription via iTunes:
If you purchased your subscription via the iTunes Store, your subscription will not renew automatically at the new price of CHF 12/month. You can reactivate the automatic renewal via your iTunes account. Click here for step-by-step instructions.

Premium/Ultimate subscription via Google Play:
If you purchased your subscription via the Google Play Store, your subscription will not automatically renew at the new price of CHF 12/month. You can reactivate the automatic renewal via your Google Play account. Click here for step-by-step instructions.