Hi, terribly sorry for the delay!
Unfortunately I can't give any precise date. To give you and anyone else interested more details on this matter, the standalone is actually done and working. I just need to tie up some other things (outside of development) before I can sell it in Itch.io
So yeah it should be out soon!
And to answer your other questions, yes, you can save the character in cc2d format, and other people should be able to open them in Character Creator 2D.