New games have been to the Bohemia Interactive 2 Bundle. Those are:

$1
Original War

BTA
Arma 2: Army of the Czech Republic

$20
Carrier Command: Gaea Mission

Relevant post has been updated.

<span class="bold">Humble Weekly Bundle: Kickstarter Edition</span>

PWYW ($1 for Steam keys)
Guns of Icarus Online Collectors Edition (Steam, Windows/Mac/Linux)
AR-K (DRM-Free/Steam/Android, Windows/Mac/Linux)
Full Bore (DRM-Free/Steam, Windows/Linux*)

BTA
Among the Sleep (DRM-Free/Steam, Windows/Mac/Linux)
Retro Game Crunch (DRM-Free/Steam, Windows/Mac)

$13
Lords of Xulima (Steam, Windows/Mac/Linux)
WARMACHINE: Tactics (Steam, Windows/Mac)

Includes soundtracks for Among the Sleep, AR-K, Guns of Icarus and Retro Game Crunch.

*The Linux version of Full Bore is only available for Steam.

Something is wrong with this bundle - Full Bore marked as Win-only, BUT it have linux port on IndieGamestand, for example. Also, IGS sale HAD soundtrack included.
Edit - oh, i see, they have it for linux in Steam, but not in Humble Lib. Shame.
Also, AR-K was before, in Spanish-something Weekly.

I really had my eyes on Warmachine Tactics back when it was announced but it just didn't seem worth picking up when the gameplay started being showed :(

Well, AR-K includes an Android version this time around. I've only got the bundle for this.

And as a matter of fact, the bundle does include DRM-free downloads of Full Bore for Mac and Linux. Don't know why they list it as DRM-free only for Windows...

Are all the soundtracks in lossless FLAC format as well or just mp3 for all the games that have the OST included?

Thanks for the info, much appreciated. Sorry to hear about the android version of AR-K hopefully the devs fix it soon so you get to play the game.

<span class="bold">Humble Weekly Bundle: Simulators 4</span>

PWYW
Kill the Bad Guy

$1
Out of the Park Baseball 15
Real Boxing™

$6
Emergency 2014
Gnomoria (Early Access)

$10
Microsoft Flight Simulator X: Steam Edition

All games are Steam-only, except for Kill the Bad Guy and Gnomoria, which are DRM-Free+Steam. Emergency 2014, Microsoft Flight Simulator X and Real Boxing™ are Windows-only, while the other three games are multi-platform.

Out of the Park Baseball v14 was DRM-Free in one of the previous weekly sales, but the new version is locked to Steam. Guess I'll be skipping this one then.

Drat, no Goat Simulator it seems.

Kill the bad guy looks rather intriguing, but definitely not enough so to justify getting the bundle. I may pick that up sometime though.

I miss Flight Simulator so much - played it a ton in high school. Of course, however, nothing really for me here. :(

I highly recommend Gnomoria. Its very nice "village building simulator". Similar, to some degree to Towns, but with own scent.
Recently ported to Linux.
Actually, purchased it long time ago (back in 2012) and seeing this Weekly wrote mail to dev - its provided me Linux installed with no problem, works great.

You can get the steam keys for "Kill The Bad Guy" and "OOTP 15" for free here :)