Of course this doesn't explain much, we'll have to wait for them to prepare more detailed explanations.
So they are employing the well know tactic of "It will be released when it's ready". I fully expected that behaviour from them, considering the kind of company that they are. No surprises here.
BTW @o_e_l_e_o you'll find this amusing - I've just found this[1] video circulating on Twitter and Reddit where Pascal Gauthier, Ledger CEO's, talks about privacy in their products:
If, for you, your privacy is of the utmost importance, please do not use our product, for sure.
At least they are being honest. What is shocking is that, despite these declarations, they keep attracting clients to their platform and still have other users defending them to the bone...
[1]
https://www.youtube.com/watch?v=M3VjQUcyZSY&t