Find the app in the google play store. The release log is part of the app description.

For me, right now, this link takes you there:
https://chrome.google.com/webstore/detail/videostream-for-google-ch/cnciopoikihiagdjbjpnocolokfelagl

If that stops working go to: play.google.com/store and search for videostream.

The log cut/pasted as of 5/3/2015:

2.15.421.1 -- 4/21/2015

Created extension to add shortcut to Videostream in Chrome (get from Help screen) Added subtitle delay/offset controls Added switch to control subtitle auto-loading

2.15.324.0 -- 3/24/2015

Added support for .sub subtitle files

2.15.319.0 -- -3/19/2015

Disabling requirement for transcoding on 'main profile' videos

2.15.2.24 -- 02/24/2015

Seeking should be faster and smoother on transcoded media Fixes for mobile users who can't find Videostream on their network

2.15.2.18 -- 02/18/2015

Improved SSA subtitle rendering

2.15.2.4 -- 02/04/2015

Media library support paving the way for browsing and watching videos from your Android phone (coming soon!) Automatically find subtitles (goto Settings -> Subtitles -> Setup auto-loading subtitles button) Disable subtitles by choosing "None" as the preferred subtitle language (goto Settings -> Subtitles -> Preferred subtitle language dropdown) New version numbering scheme: <Major Release>.<Year>.<Month>.<Day>

2.0.1.1 01/27

Videostream is on sale!

2.0.0.20 01/12

Fixed premium

2.0.0.14 12/18

Updated error messages Vastly improved network repair tool

2.0.0.10 12/1

Premium option is back! Sale back on. Join our community night :)

2.0.0.9 11/27

Fixed font rendering on OSX Improved playback of certain file types New community night feature

2.0.0.8 - 11/26

Improved MP4 playback

2.0.0.7 - 11/21

Automatically loads subtitles based on preferred language Preferred audio and subtitle language selection in settings Fixed occurrences of playlist not auto-advancing Fixed occurrences of infinite loading screen

2.0.0.6 - 11/20

Bug fixes Checkout fixes (sorry!) We've started a release video blog! https://www.youtube.com/watch?v=eyAZHogBOcw&list=UUDk-puas3NAIOLIGFeEFL1g

2.0.0.5 - 11/19

Videostream premium on sale for a limited time! Auto-select loaded external subtitles Better video format detection AC3 transcoding for passthrough if audio isn't AC3

2.0.0.4 - 11/18

Internal SRTs work again! Mobile app download link! (It also works on Android 5.0 now!) Small UX fixes

2.0.0 - 11/06

Brand new everything! Everything should be faster, smoother, more stable, and prettier for everyone!!! Chromecast VLC videos (any format) Chromecast quicktime videos (any format)

1.3.2.2 - 10/14

Stability fixes. Video should reload if Chromecast errors out.

1.3.2 - 10/02

We no longer conflict with BlueStacks Improved speed of video format detection (faster "analyzing video" screen) Decreased likelihood of antivirus problems The VLC of Chromecast