Download Official CM13 Nightlies for Oneplus 3 from here.
https://download.cyanogenmod.org/?device=oneplus3

Miui 8 released for oneplus 3.
It's the first custom Rom which supports dash charge. Please note that it doesn't have gapps inbuilt so you've to flash it.
Bugs:
Alert slider not working. Everything else works.
Download link:
https://drive.google.com/file/d/0B7gQ8Ql0vHiWTGlGQm44TUd1ZHc/view

Join xda forum for discussions.
http://forum.xda-developers.com/oneplus-3/development/rom-miui-8-oneplus-3-based-6-0-1-t3425328/page1

Go Gold! The OnePlus 3 Soft Gold Is Coming Soon. Order yours on August 1st 12:00 pm CEST https://www.youtube.com/watch?v=cxJlGI-TvgU

Update: If you live in the US you'll be able to pick one up tomorrow!

Hi Everyone,
Oneplus begun rolling out OxygenOS 3.2.2 for the OnePlus 3 today. Here's what's new in this update:


Improved notification management in doze.

Addressed alert slider/silent mode issue.

Disabled fingerprint sensor while in pocket.

Added NFC toggle in quick settings.

Improved noise cancellation in video recording.

Updated 4K video recording codec.

Added latest security patches and various optimizations.

Download link for OOS 3.2.2 full zip for oneplus 3
http://otafs.coloros.com/patch/amazone2/GLO/OnePlus3Oxygen/OnePlus3Oxygen_16.A.12_GLO_012_1607251520/OnePlus3Oxygen_16_OTA_012_all_1607251520_5926eed75c18470f.zip

Dirty unicorn finally arrived for Oneplus 3. Thanks to @Shreesha_Murthy.
Download link: https://www.androidfilehost.com/?fid=24591000424950232
XDA discussion - http://forum.xda-developers.com/oneplus-3/development/rom-tweet-1-dirty-unicorns-10-4-t3426739

Android N-ify now supports OOS specific qs tiles. Night mode and NFC are now available.
Bug: Recents settings is buggy for some. Disable all options in recents settings as a workaround.
Download link: https://ci.paphonb.xyz/job/AndroidN-ify/lastSuccessfulBuild/artifact/app/tk.wasdennnoch.androidn_ify_Build473.apk

OP3 dash charge sources released!!!
https://github.com/OnePlusOSS/android_kernel_oneplus_msm8996/commit/38dd8d898321801498f85d84f434fa7a9de2b992

Dirty unicorn Rom updated with Dash charge support for Oneplus 3

http://forum.xda-developers.com/oneplus-3/development/rom-tweet-1-dirty-unicorns-10-4-t3426739

When you're bored with CM based ROMs, there comes AOSP based ones.
Here are the available AOSP caf based ROMs for Oneplus 3.
Omni - http://forum.xda-developers.com/oneplus-3/development/6-0-omni-testbuild-oneplus3-t3425082
Slim - http://forum.xda-developers.com/oneplus-3/development/rom-slim6-oneplus3-t3419188
Tipsy - https://www.androidfilehost.com/?fid=24591000424950680

Devs included Dash blobs in all the ROMs. So everything should work.

Happy flashing!!

Latest nightly with dash charge and sRGB download link
https://download.cyanogenmod.org/get/jenkins/171909/cm-13.0-20160729-NIGHTLY-oneplus3.zip

Validus new OP3 build with Dash charge.
Download link: https://www.androidfilehost.com/?fid=24591000424951181
Validus is an AOSP based ROM with CMTE. Happy flashing!!

Dirty Unicons for OP3 is updated.
Changelog:
-Fixed dex2oat dialog showing up on every boot[Dirtying apps, xx of yy]
-Fixed LTE signal dropping when network modes are switched
-Fixed data connection not firing up after disconnecting from WiFi
-Snap camera upstreams
-Fixed always ON Notification LED light
-NFC works just fine now
-Builds dexpreopted to reduce first boot time[Gimmicky AF]
-Fixed Bluetooth app FC'ing
-Upstreams from DU git

Download link:
https://androidfilehost.com/?fid=24591000424951200

Rom updates for Oneplus 2 users
DU Updated, 31/07 v10.4
Link : bit.ly/duop2
Changelog :
- Boot time reduced
- Upstreams from CM
-WiFi QS tile bug fixed
- Translation Updates

Oneplus is conducting a survey for dash charge powerbank. Please take your 5 mins of time to fill the survey.
https://forums.oneplus.net/threads/new-product-survey-dash-charge-power-bank.457920/

Boeffla-Universe: OnePlus 1,OnePlus 2 and OPX CM13 kernel updates are out.

Boeffla kernel coming for OP3 soon ™

Oneplus One ROM updates:

Zephyr OS - http://forum.xda-developers.com/oneplus-one/development/rom-zephyr-os-v4-2-ubertc-t3429748

Darkobas [updated on 14th July]
https://basketbuild.com/devs/darkobas/bacon

Cardinal AOSP -
http://forum.xda-developers.com/oneplus-one/development/rom-cardinal-aosp-t3425990

Tesla with OMS
https://www.androidfilehost.com/?fid=24651429356503190

Tipsy with OMS
https://www.androidfilehost.com/?fid=24651429356503203

NucleaROM
http://forum.xda-developers.com/oneplus-one/development/rom-nuclearom-t3417836