On Wed, 24 Aug 2005 12:50:21 +0100, Roland Perry
wrote:

I'm a bit confused here. Will the 7DTC come on a free Oyster card

Yes, if you don't have one already or want an extra one (although they
seem to be reserving the right to start charging the £3 deposit again
in the future).

(disposable at the end of the week)

Only if you have no further use for an Oyster card...

or can I now put a 7DTC on my existing prepay Oyster?

Yes, you have been able to do this for some time. You can do it with
any Travelcard season provided your card is registered (I'm not sure
if they require you to register if it's only a 7DTC).