Articles (http://www.theverge.com/2014/12/3/7325083/wire-chat-service-...) suggest "end to end encryption for voice calls" and encryption to and from their servers for text, but I haven't seen anything about it being WebRTC (unless I missed that on the product's web site).
I'm not sure that them having my messages unencrypted on their servers makes that feature any more desirable than Skype, WhatsApp and the like. Encrypted voice call is good, but in the case they don't say how they do that encryption, it'll remain less-than-trustworthy.
I'm not sure that them having my messages unencrypted on their servers makes that feature any more desirable than Skype, WhatsApp and the like. Encrypted voice call is good, but in the case they don't say how they do that encryption, it'll remain less-than-trustworthy.