What does the cryptic crossword clue "Divorced, eh? Good news for one in for the long term (4,6)" mean?

The wordplay uses a charade (building blocks). FREE (synonym="divorced") + PARDON (synonym="eh?") = FREEPARDON The answer is FREEPARDON.

Divorced, eh? Good news for one in for the long term (4,6)

Guardian Cryptic #26703 | 20 Across | 2015-10-15 flower