Hi Yury Vidineev,
I will discuss with Jared and Mario and get back with updates.
Dell Technical Support L3 | Project Sputnik
Dell Support is also on Twitter! https://twitter.com/DellCaresPRO
I went back to the page and 1.3.7 shows added at 2017-07-25 03:54:13, after your mention from the 24th.
Now I can see it in Ubuntu Software. Thanks!