Google Feedburner APIs are being deprecated, but have no scheduled shutdown date. There are other APIs being deprecated or shut down, but Google says that the majority aren’t being affected. To learn more: googlecode.blogspot.ca
If you’ve been using Feedburner to post RSS feeds from your blog, you’ll probably want a replacement. Fortunately, there are some free alternatives:
There’s also RSS 2 HTML: includes some advanced options.
Robin Good has an extensive list: Best RSS to HTML publishing tools
Hope this helps.