Windows Phone Glance Features - Developer Access? - windows-phone-8

Question

As a developer what WP Glance features can I program into my apps?
My phone tells me my current splashscreen isn't Glance compatible and nor are any of those of other apps on my phone. The fact this information is available suggests that it is possible to make such a splashscreen. Can we do this as ordinary developers, and if so, how? Or is it only for Microsoft and selected partners?
What about notifications on the Glance screen? Can we add those to our apps capabilities?

Answer 1

I managed to get the content of my wide tile onto the lock screen and onto the Glance screen, which will do me for now.
This is how I did it.
On my wide tile I have 3 lines of content. In TileAgent.ScheduledAgent.cs I set:
WideBackContent = "Line1" + "\n" + "Line2" + "\n" + "Line3";
This appears as the text content of my wide tile and after further changes to the project as 3 lines on the lock screen. On the glance screen the CRLFs get lost and it appears as one line.
To achieve this I added a lock screen icon to the project and made some changes to the app manifest file and that was it!
1) Lock Screen Icon
I created a 38x38 png file with just white and transparent pixels called LockImage.png and put it in the Assets directory immediately under the main project directory.
2) Update app manifest for Lock Screen Icon
In the
<Tokens><PrimaryToken><TemplateFlip>
section I set:
<DeviceLockImageURI IsRelative="true" IsResource="false">Assets\LockImage.png</DeviceLockImageURI>
3) Update app manifest for wide tile text on lock / glance screen
Immediately after the Tokens section I added:
<Extensions>
<Extension ExtensionName="LockScreen_Notification_TextField" ConsumerID="{111DFF24-AA15-4A96-8006-2BFF8122084F}" TaskID="_default" />
</Extensions>
4) On the phone
In Settings/Lock Screen there is a section:
notifications
Choose an app to show detailed status.
Here I chose my app and then my wide tile text appeared on the lock screen.
In settings / glance screen I set glance screen always on (you may want a less battery intensive mode).
Then under content where it says "Select notifications and other content from lock screen settings" I set "Detailed status notification" to "On"
I still get the message "Your current app does not work with glance screen" which is fine. My apps lock screen isn't used as the glance screen but the all important text appears albeit with the CRLFs removed.