There will be a total of 21 million coins and at 100 (YST coins) to 1 ratio (AXE coins) will be issued. We will be in touch with Novaexchange to conduct the swap. X17 algo will be the new mining method as well. Cheers 
Looking at other coins that done a swap recently https://novaexchange.com/coinswap/, this looks like a positive move from the dev.
Bring on the weekend.