I hope you code review yourself in the past perfect maybe sometimes in a futurum exactum manner?
'It has have changed XYZ' and 'It will has have changed XYZ'. To keep it spicy :D ...
to keep yourself guessing use the the first conjugative (i don't know if english has more than 1) and add a 'It may has have changed XYZ' you know ... keep yourself guessing in the future past :D .....