While some of the users liked new Twitter design on Android, much more were unhappy about it and trying to convince Twitter to return to four buttons design. It looks like Twitter is actually listening to users as the company is looking to return to swipeable design.
The alpha version gets the four buttons at the top of the screen, consisting of Timeline, @Replies, Discover, and Me sections. It also has several new yet unreleased features such as replying, retweeting direct from the timeline and a redesigned Discover section. However, it is not sure if Twitter brought the "old" four buttons design for good or they are preparing a major UI redesign, but we'll find out more in upcoming months.