[Nook HD, HD+ General] webdroidmt:
Time to get the Nook HD+ rolling on Kitkat! XDA forum member succulent (aka Iamafanof) has given me permission to post a link to his blog with all the necessary info that you need, plus the all important links to download his CM11 4.4.2 roms.

I had previously been running his CM 10.2 builds with sgt7 and they were great. Now, been running his CM11 builds since 12/16 and they are very functional and run extremely well.

It is highly recommended that you read over his blog to get the info you need to properly flash it. It's likely that your current recovery, be it CWM or TWRP will be unable to flash 4.4. You can try and if it fails, download the zip recoveries for either CWM 6.0.4.5.x or TWRP 2.6.3.0 on succulent's website listed below. Succulent recommends CWM but I've had great success with both of them. If you have a problem flashing the recovery zip, extract the image file from the zip and flash either through ADB or the PS app flashify from within your OS. EDIT: You do need to update your recovery to one of the above-mentioned recoveries.

Note: succulent's 4.4 builds are scripted to automatically install CWM 6.0.4.5b when installing the rom. But, the catch-22 is that you need to already have CWM 6.0.4.5.x or TWRP 2.6.3.0 to install 4.4 roms. :) EDIT 01/14/14: Currently, succulent's builds are now scripted to automatically install TWRP 2.6.3.0 instead of CWM 6.0.4.5b.

New TWRP 2.6.3.0 and CWM 6.0.4.5.x recoveries: http://goo.im/devs/succulent/ovation/recovery If you choose CWM, 6.0.4.5b is preferred as it supports both internal and ext sdcard.

Needless to say, make a nandoid backup before proceeding and if you're not comfortable doing this...DON'T!

Link to succulent's blogsite with download links: http://iamafanof.wordpress.com/2013/12/20/cm11-0-kitkat-android-4-4-2-for-nook-hd-xx-20dec2013/

Note: There are two different builds, one for internal (eMMc) and one for sdcard, be sure to download and install the correct one. I am using the eMMc build,so I don't have any knowledge of how the sdcard build is working.

Additional link to succulent's rom builds on Goo: http://goo.im/devs/succulent/ovation/cyanogenmod/internal

On the Goo site, he also has his CM 10.2 builds that might be of interest to some of you. Note: His CM10.2 rom builds automatically install TWRP 2.6.3.0.

You must use KitKat 4.4 gapps. A gapps link is provided on succulent's blog site. Either use those gapps or the PA zero day gapps linked below. If you are going to use ART, it's recommended that you do use the PA zero day gapps for best compatibility. If you don't know what ART runtime is, google it! :)

All credit for the rom builds, as well as the new recovery images goes to succulent (aka Iamafanof). I am just spreading the news so we can all finally have KitKat on our devices.

EDIT: Just a reminder regarding the newer recoveries, CWM 6.0.4.5.x and TWRP 2.6.3.0, they are in flashable zip form on succulent's blogsite linked above. If you run into a problem flashing the zip, one of the simplest ways to get the job done is with Flashify. Just unzip the recovery zip to get the image file. Put the image file on your device and flash it with Flashify. Play Store link: https://play.google.com/store/apps/details?id=com.cgollner.flashify

Regarding ART runtime: Since it's still "experimental", YMMV with the results you get. Google may decide ART isn't feasible and dump it going forward.

Note: Not all gapps packages are ART compatible, at this time it is probably best to use the Paranoid Android zero day gapps. Link for PA gapps: http://xdaforums.com/showthread.php?t=2397942 Be sure to choose the current 4.4 gapps.

With ART runtime, it is generally better to initiate it on a fresh rom install and before you install all of your user apps. Btw, it's normal for it to take a long time to initialize on the first reboot. , I found that it generally takes a while to "settle in" and should become more fluid/speedier over time.

Always be sure to have a nandroid backup so you can easily go back to dalvik if ART isn't your thing.

One last thing about ART, Xposed Framework does not yet support it. It will appear to work but it does not. Matter of fact, with Xposed installed on your device, it will revert ART runtime back to Dalvik. Since I love using Xposed, this has kept me from using ART except to test it.

EDIT: Hey guys, just posting as new stuff comes up. Here's another possible alternative for those that may have a problem with either of the internal recoveries. XDA member sandsofmyst has put together a bootable TWRP 2.6.3.0 sdcard installer. If you use it, please post your results here and don't forget to give sandsofmyst a thanks click.

http://xdaforums.com/showthread.php?p=48549135#post48549135

Enjoy!

Mike T