You can now edit your captions on Instagram

The latest update (6.10.0) to the Instagram would allow you correct any typos you could've made while writing your captions (#hashtags)
And you can change your location too.

The explore page is also updated and now displays the results better and fatter than before. 

Icons are updated too but no major design changes. Instagram currently has over 200 million users.

If you haven't updated it yet here is the link to playstore