Perl 7 will be essentially Perl 5.32 (June 2020), but with different default settings. You'll learn about the changes that have happened with Perl in the last decade and what you need to do to be compatible with v5.32. Along with that, you'll learn about the optional settings Perl 5 has and what you need to do when they are enabled by default rather than by request. You have plenty of time to ensure a smooth transition.

Much of this is basic best practice advice that benefits your Perl 5 programs even if you never make the jump to Perl 7. For instance, the strict and warnings features will automatically be enabled. Handle those in your existing code and you should have more robust programs, giving you more confidence in your work.