Multi-wallet:- We are in very early stage, So we are only focused on Bitcoins.
BTW we are not like Xapo or any other hosted wallet. Our wallet is software that you can download currently only on windows platforms.
Are you planning on releasing the wallet for other operating systems? Mac, Linux?
O3 Wallet is available for Windows, mac and Linux. Website is using script to detect OS and provide relevant download link. IF you are on mac or Linux, it'll provide relevant download link to you. We are working on new web UI to provide all three options rather than OS specific.
I'd be very interested to hear which coins you would be supporting in the future and if all wallets (Bitcoin + altcoins) will be contained within one application?
I don't even think there are any other wallets out there that provide this.
Currently We only Support Bitcoin. We have a very small team, Supporting any new coin is added cost which we can't absorb at this stage. So we are just focused on bitcoin and still allot of work needs to be done. We need user feedback and then we can fast track development and later we can work on adding new coins. BTW we have shape-shift built-in app which allows user to convert altcoins and store in the wallet. In few months time- we'll be integrating it even deeper into the app to support other use cases.