Compatibility issues between what and what? If it's 6.7 and a solution supports 6.7 then it should continue to work.
Yes
thank you and will be there any compatibility issues
Compatibility issues between what and what? If it's 6.7 and a solution supports 6.7 then it should continue to work.
than you, i mean will be there any issues after the update
There's no way to predict the future.