That is an excellent question, to which I do not have a complete answer. :)

You might now but to log to your steem account you can use steempeak.com (which is just one way to log in as well as steemit, busy, esteem, steemSTEM.io, etc.). steempeak will also be available on hive, but they will change address - and that is still not sure what will it be, but I'll let you know as soon as I find out.
Also, I'm 99% sure that it will be announced and linkedhere as well.

Hope this helps ;)