The most common and most likely answer to this crossword clue is the 8 letter word COPYLEFT
C
O
P
Y
L
E
F
T
Buddy explains!

The straight part
We know that "development in publishing" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case development in publishing = copyleft.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
Crossword Answer definitions
COPYLEFT noun- The philosophy of using copyrights to enforce freedom of information, especially software source code.
- A software license that follows this philosophy.
- To license under a copyleft license.