When Can We Expect To See Sparrow On Adroid?

Just learned that Google acquired Sparrow - a Mac and IOS mail app famous for its friendly user interface. Now how long can we see Sparrow or some of its elements in Google's own gmail app? Any thoughts?

FYI:

Google snatches up Sparrow team to work on Gmail

http://news.cnet.com/8301-1023_3-57476739-93/google-snatches-up-sparrow-team-to-work-on-gmail/