I was wondering the same thing and dug this up:ASX has confirmed...

I was wondering the same thing and dug this up:

ASX has confirmed that the amendments to the Listing Rules which require listed entities to adopt and disclose a securities trading policy will commence on 1 January 2011 and has released a guidance note (Guidance Note 27) which indicates:

* which amendments to a trading policy will constitute a material change and require that the amended policy be given to ASX for release to the market;
* some trading that ASX considers may commonly be excluded from the operation of the trading restrictions established under the trading policy; and
* some circumstances that ASX considers may commonly be deemed exceptional.