The Associated Press boldly writes to me that Google has announced compensation for all paid Gmail users - 15 days of free service will be served.
Paid are those who pay for additional quotas on Gmail (10GB for $ 20 per year and can be more) or sitting on Apps Premier Edition ($ 50 for a user per year).
Google Apps Premier Edition contains 99.9% uptime as a service condition for Gmail, Google Calendar, Google Talk, Google Docs and Google Sites.