Most of the functionality that makes the TiVo convenient to use will stop working from 31/10/17.
Details here:
https://myaccount.mytivo.com.au/endofservice
http://support.mytivo.com.au/index.php?action=artikel&cat=1&…
As a consolation, there is a TiVo Swap Out Offer: https://myaccount.mytivo.com.au/tivoswapout
However, this offer is only open to TiVo devices which have connected to the TiVo Service in the 6 months prior to 1/3/17 (and presumably, also registered at mytivo.com.au), so I'd advise you not to rush out and buy a cheap secondhand TiVo unless the owner has registered it and is willing to change their details to yours at https://myaccount.mytivo.com.au/myaccount/details).
I took advantage of the TiVo swap-out offer as soon as I received the email as the email stated it could take up to a few months for stock…
I received an email that my TiVo was ready for pickup within an hour and so went in and HN had 15, but a few hours later all of them were gone…
One good point is that I had lots of recordings I would like to transfer to PC so I didn't bring in the TiVo, and HN didn't ask for it… winning I guess…