The two e-commerce platforms will be discontinued on February 1st, 2015. As you probably already know, these platforms are aimed at small to mid-sized online retailers.
If you’re directly affected by this, no need to worry, as Magento is offering migration options for each client, with special migration offers to Bigcommerce, and also to its Community and Enterprise Editions.
With their proven track record of migrating large groups of merchants (we’re talking thousands here) Bigcommerce and Magento managed to design a migration program to make sure that all retailers migrate their stores in time, and before the holiday season. What does the program include? Migration services, integration across sales, client support, and exclusive offers. This integration comes with PayPal and the ability to sell on eBay too.
With a reliable transition provider, this whole thing should be a walk in the park foe existing users. However I can't recommend Magento anymore so I've just removed it from the chart and will look for a new entry soon. Let me know if you have any suggestions.