What do i need to do re the new Google Fed specs

I use the inbuilt Opencart google base feed to supply data to Google and it works great, my products show up in Google Searches, although it seems they don't feature unless I have a small Ad campaign with them, which is created automatically from the data feed. I don't have to 'do' anything.

However I have been getting repeated emails from Google along the lines of "Google AdWords: 30 days left to upgrade to Shopping campaigns" This sort of implies that the current feed will not work any more?

Can anyone tell me if there are any changes I need to make to my OC config or should I be buying an extension module to enable the new specs to be complied with. Can I just ignore these emails?

anyone got a reply to this? seems awfully quite here lately

I've never used the built in one so not sure how it works or doesn't work. There are several in the extensions store that are more up to date - I use the one by UKSB that supports multistores.