Developments in Capitol interesting now? (7)

I believe the answer is:

topical

I'm a little stuck... Click here to teach me more about this clue!

'developments in' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?

'capitol interesting now?' is the wordplay.
'capitol' can be anagrammed to 'TOPICAL'.
Though, I'm not clear how this is indicated.

Can you help me to learn more?

(Other definitions for topical that I've seen before include "Up to date" , "About current events in Capitol" , "In the news" , "currently under discussion" , "like this newspaper" .)

I've seen this clue in The Sun.

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