Crossword Genius

Part, we're told, publicised in unveiling of a product, say (7)

Ross

I believe the answer is:

rollout

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

'unveiling of a product say' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'part we're told publicised' is the wordplay.
'part' becomes 'role' (eg a theatrical role).
'we're told' shows a homophone (sound like).
'publicised' becomes 'out' (I can't explain this - if you can you should give a lot more credence to this answer).
'role' is a homophone of 'roll'.
'roll'+'out'='ROLLOUT'

'in' acts as a link.

Can you help me to learn more?

(Another definition for rollout that I've seen is " Launch".)

I've seen this clue in The Guardian.
Want a hint initially instead of a full solution? Install my app