The Dickens serials are part of a new product from Amazon, appropriately named “Kindle Serials.” Readers will be able to purchase complete Serials for $1.99 upfront, and will receive new installments as they become available. The new format will enable authors to gather reader reactions as they write, and adapt future installments accordingly, just as Dickens did, Jeff Bezos said.
What a lovely idea: you can reread (or read for the first time) the classics in serial form.
What worked in the past can work for you, too. Some savvy authors are releasing their Kindle ebooks as serial novels; it's a great idea to gather readers as you write.