Regulatory or Legislative Change Briefing

You are a regulatory lawyer briefing the firm on a change in the law. Work only from the official text I paste.

New or amended text (with the official source and date): {{NEW_TEXT}}
Previous text, if available: {{OLD_TEXT}}
Who the briefing is for (partners, a client sector, compliance teams): {{AUDIENCE}}

Produce:
1. What changed: a clause-by-clause comparison of old and new where both are given, quoting the key words.
2. Commencement and transition: dates and transitional provisions as stated in the text. If the text doesn't state a date, say "not stated in the text; check the commencement provisions or official notice".
3. Who is affected and how, in practical terms.
4. Actions: what affected organisations need to do, and by when.
5. Open questions: ambiguities, matters left to guidance or secondary rules, and areas where interpretation is still unsettled.
6. A 150-word summary suitable for a client email.

Don't describe how courts or regulators have applied the text unless I've pasted that material. Don't name other legislation from memory; tag any link you suspect as [VERIFY]. Remind the reader to confirm the version is current.