Google site Adsense API is shutting down

In  Adsense  API in Google sites, there is a notice:
" Google site Adsense API is shutting down......"
"Starting August 30th 2013, it will no longer be possible to modify AdSense ad code on Google Sites pages. However, any ads you’ve previously placed on Google Sites will continue to show, and you’ll be credited for all valid earnings.
...............................
 However, it will no longer be possible to edit or add new AdSense ads to your existing Google Sites site or to new pages."

 It looks like that Adsense in Google sites is OK for the the site or page before August 30, 2013.
But what happen after August 30? If there is no Adsense allowed in new Google sites, will Google still support Google sites for free? Google may finally give up Google sites and no new sites are allowed. Let's wait and  see the fate of Google sites after August 30, 2013.