In this chapter, we will try to cover a few things that we didn't use in this book. In April 2015, Phalcon released version 2.0. You don't have to worry about it because it is perfectly compatible with what you have learned so far.
The big difference is that version 2.0 was completely rewritten in the Zephir language (http://www.zephir-lang.com/). You can upgrade to version 2.0.* if you want.
We will cover the following topics in this chapter:
Uploading files with Phalcon
Using the Annotation router