As for development, this implies limited progress (2,3)
I believe the answer is:
so far
'this implies limited progress' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'as for development' is the wordplay.
'development' is an anagram indicator.
'as'+'for'='asfor'
'asfor' with letters rearranged gives 'SO FAR'.
Can you help me to learn more?
(Other definitions for so far that I've seen before include "To this point" , "till now" , "Up until the present moment" , "to a certain degree" .)