The information I have so far. Sorry I can't give you the website it is one I subscribe to and you would not gain entry as it is passworded!
Quote:
Since news of our move to Avios – we've been listening to your feedback. We know you have questions – and we're here to answer them over the coming weeks.
Are flight fares changing?
Yes – you'll pay airline taxes, fees and surcharges in money from 16 November. Since 2008, fuel prices, airline taxes and other surcharges have continually increased. It's no longer possible for us to offer free fares. Did you know, you'll need fewer Avios for 70% of our destinations (compared to equivalent Airmiles)?
Will there be fewer places to collect?
No – all your favourites are coming with us. You'll collect Avios with Tesco, Lloyds TSB, Shell, Avis and over 200 online retailers via our eStore. So you can collect Airmiles now to spend on Avios rewards from 16 November. And you'll be able to get Avios when you pay money for British Airways or Iberia flights.
Keep an eye on your emails – we'll be sending you offers to boost your Avios balance soon.
Are Zones changing?
Yes – your new Zones will start from your chosen airport, with fares based on the distance you fly. So we're removing the current supplement. If you're a regular collector* flying anywhere in Zones 1-3 with British Airways or Iberia, however, we'll pay the taxes, fees and surcharges for you. You'll just pay the Avios fare and £27 pp return (£34 for premium).
From the last email I received I gleened this info:What's happening to your Airmiles?
On 16 November, we'll turn all your Airmiles into Avios.
We'll multiply your balance by ten – as we're making similar changes to collecting and spending to become a shared reward currency with British Airways Executive Club and Iberia Plus.
On 16 November, you can log in to your account to check your updated balance.
Not bad service in my opinion considering the hammering the airlines have had over the past several years. I am not a frequent traveller but I shop a lot! Hence the airmiles or Avios as they are now known.Hope this helps you 'mits'!Cali 
If you want to find out more you can login with your airmiles id and password to this page:
http://www.airmiles.co.uk/avios?ecamp=SOLUS_111027&ever=01&eloc=DISCOVERAVIOS