Here's the approximate changelog (in the lack of an official text!):
- you can now create your own Twitter poll, for completion by all the people following you
- 'Settings/Personalization' now lets you turn off or on video autoplay for inline videos, GIFs and Vines
- more data is shown for each tweet if you tap through to the tweet's own page/conversation, i.e. time and location (if known)
- when viewing a Twitter user's profile, you can see if they follow you
You can grab Twitter here in the Store - it's free, of course, in contrast to the likes of Aeries and Tweetium.
Here's the new version (v5.1.1.0) in action:
Creating a poll - add whatever extra choices you need (2 is the minimum, obviously!); (right) switching Autoplay in the Settings...
Ah, Paul follows me - phew! (right) spot the extra Twitter date/location stamp in the middle....