AOSPA got updated for Oneplus devices
OnePlus 3 - http://get.aospa.co/official/oneplus3
OnePlus 2 - http://get.aospa.co/official/oneplus2
OnePlus One - http://get.aospa.co/official/bacon

CM13 for OP3 new nightly is out.
This build has drastic improvements in camera.
Download link- https://download.cyanogenmod.org/get/jenkins/172524/cm-13.0-20160802-NIGHTLY-oneplus3.zip

One xda user shared the comparison shots.

AUTO MODE

CM 13 day 31/07/2016

http://imgur.com/lqrJnhY

CM13 day 02/08/2016

http://imgur.com/RoUTgBK

https://forums.oneplus.net/threads/information-on-oneplus-3-availability-in-europe.458234/

"Sales for the following regions will be temporarily paused on oneplus.net from August 9th 0:00 (CEST) until September 12th 23:59 (CEST):
Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Estonia, France, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia and Spain. Sales in Hong Kong will also be paused during this time frame."

Pro tip:
If you're on Snap camera, you can reveal some hidden features of it.
Just tap 10 times on red eye reduction.
Tip credits: @warabhishek

Good news for OPX users. Oneplus promised MM update for OPX in their OOS 2.2.2 thread.

Source: https://forums.oneplus.net/threads/oxygenos-2-2-2-rollout-is-starting-on-oneplus-x.458214/

Ground Zero ROMs for OP3 updates.
Tipsy [OMS-Substrantum] : https://drive.google.com/file/d/0B8duE1ligNDHc2IwMFppUXBfU2M/view?usp=sharing

Validus [CMTE] -https://www.androidfilehost.com/?fid=24671318762848515

https://plus.google.com/+FranciscoFranco1990/posts/1Su46UXgzA3

Franco kernel coming soon for OPX, OP2 and OP3.

OOS CAMERA 3.5: http://forum.xda-developers.com/oneplus-2/themes-apps/oos-3-0-beta-camera-cm-13-t3350060/page1

New DU build up, v10.5 - 2016/08/14
Link : https://forums.oneplus.net/threads/unofficial-dirty-unicorns-op2.452033/page-4#post-15163320

Jgcaap CM13 is now available for Oneplus3. Enjoy!!
http://download.jgcaap.xyz/files/oneplus3/cm-13.0/cm-13.0-20160814-jgcaap-oneplus3.zip

Hey guys!
I just released my alert slider customization app for the Oneplus 3 on OOS.
It requires root & xposed.
Please have a look:
https://play.google.com/store/apps/details?id=com.dev.weathon.customalertslider

When you have any suggestions/complaints/ideas whatvever just tell me :) Please tag it with #CustomSlider so i can find it :)

The App may also work for the Oneplus 2 / Oneplus X but i cant test that.

OP3 got CM snapshot build. Snapshot is a pretty much stable build compared to nightlies. So feel free to flash.
https://download.cyanogenmod.org/?device=oneplus3

Arter kernel OP3 got an update
Change log:
GPU will now hit 133MHz
Download link- http://arter97.com/browse/op3/kernel/CyanogenMod/arter97-kernel-1.1-20160819.zip

Sultan cm13 arrived for op3. Custom camera Hal which can match OOS. Flash it right away!!
http://forum.xda-developers.com/oneplus-3/development/rom-kernel-unofficial-cyanogenmod-13-0-t3444221/post68286100

Oneplus X received Marshmallow community build OOS.
https://forums.oneplus.net/threads/oxygenos-3-1-0-marshmallow-community-build-for-oneplus-x.460857/

https://youtu.be/OkUeZ7_YsAI

Icons V2? "Tune in on 08.25.2016"

OxygenOS 3.5 Community Build for the OnePlus 3 - OnePlus Forums
https://forums.oneplus.net/threads/oxygenos-3-5-community-build-for-the-oneplus-3.461235/

Arter CM13 and kernel for Oneplus 3 has been updated

Build date - 25th August
Changelog:
CM source merge
AOSPA's improvements by The crazylex and xboxfanj
- Massive Kryo-specific optimizations
- ART & jemalloc(memory allocator) optimizations
- RIL is now in power saving mode
WiFi re-association RSSI thresholds relaxed (by sultan)

Link- http://forum.xda-developers.com/oneplus-3/development/arter97-s-custom-built-cyanogenmod-13-t3439217/page28
Kernel changelog

Version - 1.2
Automatic TRIM(discard) now enabled
Many sultan's improvements merged
Switched to FSF GCC 6.2

Link - http://forum.xda-developers.com/oneplus-3/development/arter97-s-custom-built-cyanogenmod-13-t3439217/page28