The way you send messages will never be the same. OK, that's not entirely true. But, with the new enhancements coming to your iPhone with iOS 10, you'll be able to send more personal, creative, and interactive messages to your BF, your BFF, or any other person whose acronym starts with "BF."
A video by MacRumors outlines all the new features coming to the Messages app, and between emoji that are three times larger, and the ability to write out your messages by hand, there's a lot to get excited about.
Other features in the video include an easier way to send photos, the ability to write on photos, screen effects, bubble animations, "tapbacks," and more fun add-ons. Of course, this is all being tested on a beta version of iOS 10, meaning things might change a little by the public release date in the fall. But this should give you a general idea of what to expect.