I'm not sure if this will create collateral impact on us but I'll leave that to 
XTL to figure out.

Stephen Michael Kellat 


Begin forwarded message:

> From: Oliver Ries <[email protected]>
> Date: September 10, 2014, 6:06:01 PM EDT
> To: ubuntu-phone <[email protected]>
> Cc: [email protected]
> Subject: update cadence & backlog management for Ubuntu on Phones
> 
> Hi,
> 
> I wanted reach out to a broader group and discuss the update cadence for 
> Ubuntu on Phones. In respect of our customer relationships I want to keep the 
> discussion focused on relative time frames rather than specific fixed dates.
> 
> tl;dr
> Starting with the availability of Ubuntu on phones we intend to provide 
> monthly updates, with exceptions for security and other critical bugs. The 
> content of said updates will be determined in a Scrum-like fashion by 
> prioritizing existing backlogs as input for 2w engineering iterations.
> 
> We recommend a monthly release cycle in the first 6 months to be able to 
> quickly react to customer feedback while balancing any burden that updates 
> may cause (e.g. validation). Deviating from the recommendation in 2 week 
> increments is acceptable upon request from the stakeholders/customer.
> 
> Update Cadence:
> * System components:
>  - OTA (over the air) updates in 4 week iterations, starting at retail date
>  - Content
>   - Critical/High bug fixes that are not leading to data loss or loss of 
> major functionality
>   - UX fixes
>   - Prioritized feature backlog
> 
> * Click packages:
>  - Updates are available immediately after the app author updates his app in 
> the app store
>  - Checks against supported frameworks will ensure compatibility with the 
> then current system image
> 
> * Security updates & Critical Issues
>  - Security updates will trigger a System Image or Click update at the time 
> they occur and a fix is available
>  - A security update of the system image will solely contain updates to 
> components that are affected by the security issue
>  - Any Critical bug that leads to data loss and/or loss of major 
> functionality will also trigger an out of schedule update at the time the 
> incident is understood, assessed and a fix/remedy is available
> 
> 
> Backlog & Engineering Management
> We intend to move more to a Scrum-type development model, where a small & 
> well defined sprint backlog is managed by all stakeholders and will be 
> implemented & delivered for an image promotion within sprints of 2 weeks 
> length. The customers, via the commercial team, will decide when to trigger 
> an OTA update. We plan to use following key Scrum elements:
> 
> Product Backlog
> A list of features and bug fixes that is widely open for input from various 
> sources such as Product Management, Design, the Community, early adopters, 
> engineering etc pp.
> 
> Sprint Planning Meeting
> The meeting where the Product Backlog will be regularly reviewed and 
> prioritized in preparation of the upcoming engineering sprint. 
> Representatives of the various functions (Commercial Team, Product 
> Management, Design, Community, Engineering) will be conducting the meeting 
> under the facilitation of a meeting chair/host
> 
> Sprint Backlog
> A subset of engineering tasks serving as input for the upcoming engineering 
> sprint, as defined in the Sprint Planning Meeting
> 
> We are curious to get your feedback to make sure this plan will not interfere 
> with other parts of the Ubuntu ecosystem. Please follow up in this thread or 
> contact me directly.
> 
> best,
> Olli
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